XII Phy Mcqs physic question

8/16/2019 XII Phy Mcqs physic question

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MCQS FOR EACH CHAPTER

XII-PHYSICS

FROM THE DESK OF: FAIZAN AHMED


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CHAPTER 11

1) According to the caloric theory heat is present in all bodies in the form of:(a)

Molecular Interaction (b)

Translatory motions of molecules

(c)

Molecular Kinetic energy(d) A weightless fluid2) Caloric is the:

(a)

Hypothetical weightless fluid(b) Imaginary concept of energy(c) Energy(d)

Molecular motion3)

The normal hman body temperatre is:(a) 22 o! (b) ""o! (c)

#$%&o! (d)

'o!

!)

The temperatre at "hich both Celsis and #ahrenheit scales coincide "ith each other is:(a) ""(b)

2'(c)

&"(d)

*ero$) Absolte %ero is e&i'alent to:

(a)

"" o+(b)

&," o!(c) " o+(d) 2' K

() inetic energy of gas molecle is:

(a)

-T(b)

(c) KT

(d)

*)

inetic energy per mole of idea gas molecles is:(a)

-T

(b)

(c) KT

(d)

+) ,pon "hich Physical &antity inetic energy of gas molecles depends:

(a)

.umber of moles of gas(b) Temperature of gas(c) /ressure of gas(d)

0olume of gas-)

.olecles of "hich gas/ 0ygen or itrigen in air "ill mo'e fast at some paeticlar temperatre:(a) Molecules of both gases will mo1e with same 0elocities(b)

3ygen(c)

.itrogen(d)

.one of these


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1)

The nit of Co4efficient of thermal epansion is:(a) mK

(b)

(c)

K 4 (d)

K

11)

Co4efficient of 5olmetric epansion is the:(a) Intrinsic 5uantity(b) Thrice of +o4efficient of 6inear e3pansion(c)

ne third of +o4efficient of 6inear e3pansion(d)

Thermometric /roperty12)

6hich physical &antity of sbstance does not change "ith thermal epansion7(a) 0olume(b)

6ength(c)

Mass(d) 7ensity

13) 6hich type of strips of metals are sed in 8imetallic strip:(a)

7ifferent +o4efficient of thermal e3pansion

(b)

7ifferent lengths(c) 7ifferent 8i9e(d)

7ifferent 8hapes1!)

A thermostat is a de'ice "hich is sed:(a)

To :eep the heat flow constant(b)

To Isolate the system from surroundings(c)

In all heating appliance(d)

To :eep the temperature constant1$)

The &antity of heat re&ired to change the state of a sbstance is:(a)

Molar specific heat(b)

Heat capacity(c)

6atent heat(d) 8pecific heat

1()

The &antity of heat re&ired per degree rise the temperatre of a sbstance is:(a) Molar specific heat(b) Heat capacity(c)

6atent heat(d)

8pecific heat1*)

The &antity of heat re&ired per degree rise the temperatre of nit mass of a sbstance is:(a)

Molar specific heat(b)

Heat capacity(c)

6atent heat(d)

8pecific heat1+) The &antity of heat re&ired to rise the temperatre of 1g of "ater throgh 1/ in 9oles is:

(a) &2"(b) &2""

(c)

&%2(d)

&21-)

The &antity of heat re&ired to rise the temperatre of one mole of an ideal gas at constant pressrethrogh 1 is:(a)

+1;(b)

+(c)

<(d)

+ p


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2)

The &antity of heat re&ired to rise the temperatre of one mole of an ideal gas at constant 'olmethrogh 1 is:(a)

+1 (b)

+(c)

<(d)

+ p 21) P5

; <:

(a)

KT(b) n-T(c) +onstant(d) -T

22)

The graph of 8oyles la" is a:(a)

+ur1e(b)

8lope(c)

8traight line(d)

Hyperbola23)

The graph of Charle=s la" is a:(a)

+ur1e(b)

8lope(c) 8traight line

(d)

Hyperbola2!)

>n "hich process there is no "or? done:(a) Isothermal /rocess(b)

Adiabatic /rocess(c)

Isobaric /rocess(d)

Isochoric /rocess2$)

6or? done in an >sobaric Process is:(a) /0(b) - T(c) / 0(d) n T

2()

>n "hich process there is no change in >nternal energy of system/ "ith heat transfer:

(a)

Thermal /rocess(b)

Iso4thermal /rocess(c)

Isolated /rocess(d)

Isochoric /rocess2*)

Efficiency of heat engine "ill be minimm "hen:(a)

8ource and sin: are :ept at thermal e=uilibrium(b)

8in: is :ept at " o+(c)

Temperature of source is :ept at Infinity(d) 8in: is :ept at Absolute 9ero

2+)

Entropy change of heat engine "old be maimm "hen:(a) 8ource and sin: are :ept at thermal e=uilibrium(b) 8in: is :ept at " o+(c)

Temperature of source is :ept at Infinity(d)

8in: is :ept at Absolute 9ero

2-)

>n "hich process "or? done is maimm:@a)

Isobaric /rocess @b)

Isochoric /rocess @c)

Isothermal /rocess Adiabatic /rocess 3) The internal energy of a system depends pon:

(a)

Temperature(b)

Entropy(c) /ressure(d) 0olume


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31)

The ni'ersal gas constant per molecle is called:(a)

-aleigh4s constant(b)

?olt9man +onstant(c)

@as constant(d)

8tefan>s constant32) 1 Cal ; ncraes in length per nti length per degree rise in temperatre of alminm rod of 1m is 2! 1 4(

BC 6hat "old be the increase in 'olme per nit 'olme per degree rise in temperatre of a cbeof alminm of 'olme 1m3 "hen both are heated throgh the same range of temperatre7(a)

2 3 "4,C+(b)

%2 3 "4'Co+(c)

2& 3 "4,C+(d)

2%& 3 "4'Co+3+)

inear thermal epansion does not ta?e place in "hich of the follo"ing:(a)

Dater(b)

Iron stic:(c) @lass rod(d) 8teel bar

3-)

Ratio bet"een the coefficient of linear thermal epansion and coefficient of cbical thermalepansion is:

(a)

'(b)

'(c)

,2(d)

a and b are correct!)

A fied mass of a gas is heated at constant 'olme 6hich one of the follo"ing "ill not change7(a)

A1erage distance between the molecules(b)

K% E% of the molecules(c)

A1erage speed of the molecules(d) !re=uency of collisions of the molecules


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!1)

The pressre of a fied mass of gas increases "hen it is heated at constant 'olme is de to:(a)

Increase in A1erage speed of the molecules(b)

@as becomes light(c)

Increase in a1erage distance between the molecules(d)

Elastic molecular collision!2) Change in temperatre of a body is $oC The change in temperatre on the el'in Dcale is:

(a)

B" K(b)

'2' K(c) " K(d) '" K

!3)

Absolte %ero of a gas is the temperatre at "hich its:(a)

K%E% is 9ero(b)

0olume is 9ero(c)

/%E% is 9ero(d)

a and b are correct!!)

8imetallic thermostat is sed to:(a)

To increase the temperature(b)

To increase the K%E% of molecules of substance(c)

Measure the temperature(d) To control the temperature

!$)

At 'olme 5 and temperatre T/ the pressre of molecles the gas is P >f the nmber of molecleof the gas is dobled at constant 'olme then:(a) Temp% will become half(b)

Temp% will become twice(c)

/ressure will become half(d)

/ressure will become twice!()

The total E of molecles of gas gi'es the measrement of:(a)

Temperature of the gas(b)

8pecific heat capacity of the gas(c)

Heat energy of the gas(d) Internal energy of the gas

!*)

At constant pressre the 'olme of the gi'en mass of a gas is 5 at temperatre T At "hattemperatre 'olme of the gas "ill be !5:

(a)

&T(b)

T

(c)

2T

(d)

T

!+)

6hen ice cbe melts into "ater the ice "ater system ndergoes a change sch that:(a)

?oth entropy and the internal energy of system increase(b)

Entropy of the system decrease but internal energy of the system decrease(c) Entropy of the system increases and internal energy of the system remains constant(d) Entropy of the system increase and internal energy decreases

!-)

The temperatre of a sbstance changes from 2oC to 2oC 6hat "old be the change on el'inDcale:(a) &" K(b)

2#' K(c)

" K(d)

2" K$)

>f heat energy is remo'ed from an obFect/ its temperatre "ill normally:(a)

7oes not change(b)

-ise(c)

!alls(d) !alls then rise


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$1)

The root mean s&are speed of the molecles of an ideal gas in a scaled container is ' The gas isheated/ ntil the pressre in the container tripled The rms Dpeed is no":(a)

F' 1(b)

1C#(c)

#1(d)

'$2) The a'erage E of the molecles of an ideal in a closed 'essel is increased by a factor ! 6hat "old

be pressre of the gas7(a) It will remain the same(b) It will increases by a factor of 2(c) It will increases by a factor of &(e)

It will increases by a factor of F2 1$3)

>f G heat energy is spplied to the system and 6 is the "or? done by of a gas:(a)

D 4 (b)

5 4 D(c)

4 D(d)

4 D$!) The "or? done dring


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(1)

6hen a monatomic ideal gas nder goes an isothermal change then:(a)

There would be no e3change of heat with the surrounding(b)

.o e3ternal wor:G will be done(c)

There would be no change of the internal energy(d)

The temperature changes(2) The efficiency of the Carnot engine depends pon:

(a)

Temperature of the both source and sin: only(b)

Temperature of the sin: only(c) Temperature of the source only(d) .one of these

(3)

The efficiency of the Carnot engine is directly proportional to the:(a)

Temperature of the wor:ing substance(b)

7ifference of temperature of heat source and sin:(c)

Temperature of the source only(d)

Temperature of the sin: only(!)

#or an ideal gas an isobaric change is gi'en by:(a)

+oulomb>s law(b)

@eneral gas law(c)

?oyle>s law(d) +harle>s law

($)

>f T1 is the temperatre of the heat sorce and T2 is the temperatre of the heat sin? then theefficiency of the Carnot engine "ill be:(a) TT2CT2 (b)

TT2CT (c)

T2 TCT (d)

T T2CT (()

The efficiency of Carnot heat engine is al"ays:(a)

More then ""(b)

6ess then "" (c)

""(d) .one of these

(*)

>f G1 is the amont of heat energy spplied to the Carnot heat engine and G 2 is the heat energyreFected to the sin? The efficiency to the heat engine is directly proportional to the:

(a)

52 5 (b) 52 5 (c)

5 52 (d)

5 52 (+)

#or an ideal gas an isothermal change is gi'en by:(a)

+oulomb>s 6aw(b)

@eneral gas 6aw(c)

?oyle>s 6aw(d)

+harle>s 6aw(-) T"o e&al masses of an ideal gas at same temperatre and pressre are compressed to half of their

'olmes/ one of them isothermally and the other adiabatically 6hich one of the follo"ing "old besame for both7(a) The internal energy of the compressed gases

(b)

Heat gi1en out during compression(c)

Temperature of the compressed gases(d)

.one of these*)

T"o Carnot heat engines "old ha'e same efficiencies "hen:(a)

The difference of temperature of their heat sources and heat sin:s is same(b)

The temperature of their heat sources is same(c)

The same amount of heat energy is supplies to them(d)

.one of these


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*1)

Entropy is the measre of the


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AD6ER EI

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J @2)

A @3)

C @!)

C @$)

8

@() J @*) 8 @+) 8 @-) C @1) C

@11)

8 @12)

C @13)

A @1!)

J @1$)

C

@1()

8 @1*)

J @1+)

8 @1-)

J @2)

A

@21) C @22) J @23) C @2!) J @2$) C

@2()

8 @2*)

A @2+)

A @2-)

C @3)

A

@31)

8 @32)

J @33)

C @3!)

8 @3$)

A

@3() 8 @3*) A @3+) A @3-) A @!) A

@!1)

A @!2)

A @!3)

J @!!)

J @!$)

J

@!()

C @!*)

A @!+)

A @!-)

A @$)

C

@$1) A @$2) C @$3) 8 @$!) C @$$) 8

@$()

8 @$*)

J @$+)

8 @$-)

C @()

8

@(1)

C @(2)

A @(3)

8 @(!)

J @($)

J

@(() 8 @(*) C @(+) C @(-) J @*) A

@*1)

A @*2)

C @*3)

J @*!)

C @*$)

A


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CHAPTER 12*()

The force bet"een t"o charged particles is in'ersely proportional to the:(e)

Coulombconstant (f)

/roduct of charges(g) 8=uare of the distance between them

(h)

Masses of cgarges**)

The force per nit charge:(e)

Electric field(f) Electric !lu3(g)

Electric /otential(h)

Electric Intensity*+)

The force bet"een t"o similar nit charges placed one meter apart in air in e"ton is:(e) *ero (f)

(g)

# 3 "# (h)

.one of these *-)

He magnitde of Colomb=s force "ill be:

(e)

Ma3imum in free space(f)

Ma3imum in other medium(g)

8ame in free space and other medium(h) .one of these is correct

+) The magnitde of electrostatic force is # and separation bet"een the charges is dobled then theelectrostatic force "old be:(e)

2!(f) J !(g)

&!(h)

!+1)

Colomb=s a" closely resembles:(e) .ewton>s second law of motion(f)

.ewton>s thirdlaw of motion(g)

.ewton>s gra1itational law(h)

The law of conser1ation of energy+2)

>f the medim bet"een the charges is other than air or space/ than the electrostatic force "ill:(a)

.ot change(b)

Increase(c)

7ecrease(d) ?e 9ero

+3) The magnitde of electrostatic force does not depend pon:(e)

Magnitude of the charges(f)

Medium between the charges

(g)

7istance between the charges(h)

.ature of the charges+!)

The magnitde of the force bet"een t"o nit positi'e charges "hen the distance bet"een them is onemetre "old be:(e) " .(f)

%" .(g)

2%" .(h)

+oulomb>s constant


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+$)

Colomb=s a" for the t"o e&al charges K&L "hen they are at a distance KrL is epressed by:(e) K=2Cr(f)

K=2Cr 2 (g)

K=Cr(h)

K=Cr 2 +()

,nit of colomb=s constant KL is:

(e)

.m2c42 (f)

.m+42 (g)

.m42c2 (h) .m2c2

+*) H atom has single electron and single proton each of charge & >f the radis of the first orbit is KrLthen the electrostatic force bet"een them "old be:(e)

K=2Cr 2 (f) K=Cr 2 (g) K=Cr(h)

K=2Cr 2 ++)

Jielectric al"ays


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-$)

#orce eperienced by a nit positi'e charge in the electric field in ?no"n as:(e)

+harge density(f)

Electric potential(g)

Electric flu3(h)

Electric flu3 density-() Jirection of electric force and electric field intensity is:

(e)

/arallel to each other(f)

/erpendicular to each other(g) pposite to each other(h) In any direction

-*)

6hich of the follo"ing pair of nit is e&i'alent of 9ole per colomb per meter:(e)

.C+ and 0Cm(f)

!arad and Amp(g)

Amp% And 0olt(h)

+oulomb and hm-+)

The Physical &antity "hich determines the effect of #orce on charged particle in a certain region iscalled:(e)

Electric Intensity(f)

Electric !lu3(g) Electric /otential

(h)

Electric force--)

.aimm otgoing #l "old be obtained "hen:(e) Electric lines fall parallel to the plane of surface(f)

Electric lines fall antiparallel to the place of surface(g)

Electric lines fall normally on of surface(h)

Electric lines fall at &Bo on the plane of surface1)

Electric intensity bet"een t"o similarly charged plane sheets is:(e) L

"(f) 2L

"(g) LN

2"(h)

*ero11)

The Electric #l throgh a closed srface depends pon:(e)

8i9e of the surface(f)

8hape of the surface(g)

/osition of charge enclosed in the surface(h)

Magnitude of charge enclosed in the surface12) Electric >ntensity at the centre of niformly distribted charge is:

(a) *ero(b) K=

r 2 (c) =

r 2 (d)

=

" 13)

The #l throgh a srface "ill be minimm/ "hen angle bet"een E and A is:(a)

#"o (b)

,"o (c)

'"o (d)

"o


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1!)

Electric field at the centre of s&are "hen 1MC charge are placed at its each corner is:(d)

*ero(e)

2 0oltCm(f)

F 2 0olt Cm@g)

& 0oltCm 1$) The electric field intensity bet"een t"o oppositely charged planes is:

(e)

2L" (f)

L2"

(g)

LN"

(h)

*ero1()

Electric fl "ill be positi'e "hen the angle bet"een E and 'ector area is:(e)

@reater then #"" (f)

6ess then #"" (g)

#"" (h) .one of these

1*)

The electric fl throgh the srface of the sphere is directly proportional to the:

(e)

8urafce area of the sphere(f)

-adius of the sphere(g)

+harge at the center of the sphere(h)

(A) and (+) are correct1+)

Nass=s a" is applied to determine the:(e)

Absolute potential(f)

Electric intensity due to a large charge distribution(g)

Electric intensity of an isolated point charge(h)

Electric potential between two point in an electric field1-) Change in PE per nit charge in the electric field is:

(e) Electric potential(f) /ower(g) K%E

(h)

Dor: done11)

Electric potential/ "hich is measred "ith repect to the %ero potential/ is called:(a)

Absolute electric potential(b)

+hange in K%E%(c)

An electric potential(d)

.one of these111) >n e&ipotential srface "or? cone in mo'ing the charged particle is:

(e)

/ositi1e(f) .egati1e(g) *ero(h) Infinity

112)

The potential difference bet"een the pair of similar condcting plates is ?no"n 6hatadditional information is needed in order to find the electric field intensity7(e)

/ermiti1ity of the medium

(f)

7ielectric constant(g)

8eparation between the plates(h)

8eparation and area of the plates113) The change in potential energy per nit charge bet"een t"o point in an electric field is

called:(e)

/otential difference(f) Absolute potential(g) Electric intensity(h) /ermiti1ity


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11!)

6or? done per nit charge bet"een t"o point in an e&al potential srface is:(e)

Electric intensity(f)

Electric flu3;(g)

/otential difference(h)

.one of these11$) >f capacitors are connected in sch a "ay that their net capacitance increases then they are

connected in:(e) +omple3 networ:(f) 7ifferent paths(g) A single path(h)

?ridge +ircuit11()

E&i'alent capacitance of three 3M# capacitors connected in series is:(e)

O!(f)

'O!(g)

#O!(h)

*ero11*) Relati'e permitti'ity of medim is the ratio of its permitti'ity "ith the:

(e)

/ermiti1ity of any medium(f) /ermiti1ity of itself

(g)

/ermiti1ity of free space(h) /ermiti1ity of water

11+)

et capacitance of parallel capacitors:(e)

7oes not change(f)

Increases(g)

7ecreases(h)

.one of these11-)

0ne colomb per 5olt is:(e)

!arad(f)

Tesla(g)


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12!)

Charge stored in a capacitor is directly proportional to the:(e)

+urrent(f)

/hysical conditions of capacitor(g)

/otential difference(h)

-esistance12$) The ratio bet"een the charge stored and potential difference of a capacitor is ?no"n as:

(e)

Inductance(f) +onductance(g) -eactance(h) +apacitance

12()

#or the capacitance of a parallel plates capacitor "hich of the follo"ing is correct:(f)

It is in1ersely proportional to the area of the plates and distance between the plates(g)

It is in1ersely proportional to the area of the plates and distance between the plates(h)

+apacitance is directly proportional to the area of the plates and distance between the plates(i)

It is directly proportional to the area of the plates and in1ersely proportional to the distance betweenthe plates

12*) 6hen t"o or more capacitors are connected in series then they "ill ha'e:(d)

8ame charge(e) 8ame capacitance

(f)

8ame potential difference(g) 8ame charge and same capacitance

12+)

6hen t"o or more capacitors are connected in parallel then they "ill ha'e:(e)

8ame charge(f)

8ame capacitance(g)

8ame potential difference(h)

8ame charge and same capacitance12-)

A capacitor of 1 # "ill:(e)

8tore %"+ charge at the potential difference of %"0(f)

7ischarge in second when connected across a resistor of %" hm(g) ?e fully charged in second by a current of amp(h) ?loc: the alternating current

13) The separation bet"een the parallel plates of a capacitor is dobled then its capacitance C

"ill be:(a) 2+(b)

J +(c)

&+(d)

+131)

Capacity of a capacitor means:(e)

Total potential of the capacitor(f)

8urface density of charge on the plates(g)

Total charge held by the capacitor(h) .one of these

132) After charging the parallel plates capacitor/ the battery is remo'ed >f the separationbet"een the plates increase then:(e) +apacitance decreases

(f)

The charge on the capacitor increases(g)

The 1oltage across the plates increases(h)

.one of these133)

>n order to get maimm e&i'alent capacitance/ the capacitors mst be connected in:(e)

+omple3 combination(f)

8eries combination(g)

/arallel combination(h)

.one of these


17/53

13!)

Three capacitor of 3M# of each are connected in


18/53

AD6ER EI

@*() C @**) J @*+) C @*-) A @+) J


19/53

@+1) C @+2) C @+3) J @+!) J @+$) 8

@+()

A @+*)

A @++)

C @+-)

8 @-)

8

@-1) A @-2) J @-3) J @-!) 8 @-$) J

@-() A @-*) A @-+) A @--) C @1) J

@11) J @12) A @13) A @1!) A @1$) C

@1() 8 @1*) C @1+) 8 @1-) A @11) A

@111) C @112) C @113) A @11!) C @11$) 8

@11() A @11*) C @11+) 8 @11-) A @12) 8

@121)

A @122)

J @123)

8 @12!)

C @12$)

J

@12() J @12*) A @12+) C @12-) A @13) 8

@131) C @132) A @133) C @13!) C @13$) 8


20/53

CHAPTER 13

13()

Charge carrier in .etallic condctors are the electrons of:(i)

0alence shells

(P)

All shells (:)

E3cited states (l) Inner shells

13*) #ree electrons in an Electric field mo'es from:(i)

All potentials (P)

High potential to low potential (:) 6ow potential to high potential (l)

.one of these 13+)

>f a "ire of a niform area of cross section is ct into t"o e&al parts/ the resisti'ity of eachpart "old be:(i) 7oubled (P) Hal1ed

(:)

8ame (l)

.one of these 13-)

A resistor carries a crrent > The po"er dissipated is P the po"er dissipated if the sameresistor carries the crrent 3 > is:(i)

#/(P)

/C'(:) '/(l)

/1!)

0hm=s a" is applicable only for:(a)

Electrolytes(b) Metallic +onductors(c)

8emi +onductors(d)

All of these1!1)

An electric crrent throgh a condctor prodces arond it:(i) A magnetic field(P)

An electric field(:)

?oth electric and magnetic field(l)

.one of these1!2)

1 6h ;


21/53


22/53

1$3)

Po"er dissipated in t"o parallel resistors is in'ersely proportional to their:(i)

/otential difference(P)

All of these(:)

+urrent(l)

-esistances1$!) A "ire of length and resistance R is ct into for e&al pieces Resistance of each piece

"old be:(a)

-(b) -

2(c) 2-(d)

-&

1$$)

A "ire is ct into t"o e&al hal'es/ "hich of the follo"ing physical &antity "ill not change:(i)

+onductance(P)

-esisti1ity(:)

-esistance(l)

All of these1$() E.# of a sorce in the absence of internal resistance is:

(i) I-

(P)

I- Ir(:) Ir(l) I- Ir

1$*)

Ho" three parallel resistors each of resistance 3O cold be connected "ith a 2O resistor toha'e net resistance of 3O:(i)

In series(P)

In parallel(:)

In comple3 networ:(l)

.ot in any way1$+) Po"er dissipated in t"o series resistors is directly proportional to their:

(i) -esistances(P) +urrent(:) /otential difference

(l)

All of these1$-)

Electrical condctor contains:(i)

nly free electrons(P)

nly bound electrons(:)

?oth free and bound electrons(l)

.either bound nor free electrons1()

Total potential difference across the combination of three cells becomes maimm "hen:(a)

They are connected in parallel(b)

They are connected in series(c) Two cells are connected in parallel and one in series(d) Two cells are connected in series and one in parallel


23/53

AD6ER EI

@13() A @13*) 8 @13+) C

@13-) A @1!) 8 @1!1) A

@1!2) 8 @1!3) C @1!!) C

@1!$) A @1!() 8 @1!*) 8

@1!+)

C @1!-)

8 @1$)

A@1$1) J @1$2) 8 @1$3) J

@1$!) J @1$$) 8 @1$() A

@1$*) A @1$+) A @1$-) C

@1()

8


24/53

CHAPTER 1!

1) .aimm force on a charged particle mo'ing in magnetic field is gi'en by:a)

=1? b) =1? sinQ

c)

?6d) ?6 sinQ2) 6hich of the follo"ing is not the nit of magnetic indction7

a)

Deber b)

Teslac)

.ewton per ampere per meterd)

Deber per meter s=uare93) The principle of transformer is:

a)

Mutual Induction b)

Electromagnetic Inductionc)

8elf Inductiond) .one of these

!) on4indcti'e "iring is sed to minimi%e:a) +onductance b)

-esistancec)

Mutual Inductanced)

8elf Inductance$) Henry is e&i'alent to:

a)

Deber per ampere b)

Deber per meter s=uarec)

Deber per ampere per meterd)

Deber 3 meter() AC Nenerator is con'erted into JC Nenerator by replacing:

a) -ectangular coil from circular coil b) +ommutator from slip ringsc) 8lip ring from split ringsd)

Armature from 8olenoid

*) 6hich of the t"o charged particles of same masses "ill deflect more in the same magnetic field7a)

8low mo1ing b)

!ast mo1ingc)

?othd)

.one of these+) A transformer is sed to change:

a)

/ower b) 0oltagec) -esistanced) +apacitance

-) The magnetic fl throgh a srface "ill be minimm "hen angle bet"een 8 and A is:a)

"⁰ b)

&B⁰

c)

,"⁰

d) #"⁰ 1) >f an electron and a proton enter into a magnetic field perpendiclarly "ith the same momentm:

a)

The proton will deflect more b)

The electron will deflect morec)

?oth will deflect e=uallyd)

They will no deflect at all


25/53

11) >n step p transformer:a)

4 R

b) ! " # c)

! $ # d)

# " ! 12) A charged particle enters from the left on the plane of paper/ perpendiclarly on the 'ertically do"n"ard

magnetic field The direction of force on it "old be:a) /erpendicularly on the plane of paper b) Along the plane of paperc) Inward on the plane of paperd) utward on the plane of paper

13) 6hen a charged particle enters in a niform magnetic field perpendiclarly/ its path is:a)

+ircular b)

/arabolicc)

Ellipticald)

8piral1!) ,pon "hich of the follo"ing/ magnetic field inside the solenoid does not depend:

a)

7iameter of solenoid b) +urrent

c)

/ermeabilityd) Turns per length1$) >f a "ire of length KL carrying crrent K>L placed in a field K8L placed perpendiclarly The force on the

"ire "old be:a)

*ero b)

?I6c)

?I6 sinQd)

?I6 cosQ1() The crrent prodced by mo'ing the loop of "ire across the magnetic field is called:

a)

7irect current b)

8teady currentc)

/ulsating currentd) Induced current

1*) The phenomenon of prodcing emf in the coil itself de to 'arying crrent is called:a)

Motional e%m%f b)

Electromagnetic Inductionc)

Mutual Inductiond)

8elf Induction1+) The de'ice "hich con'erts .echanical energy into Electrical energy is called:

a)

@enerator b)

Electric Motorc)

Transformerd) Thermocouple

1-) Je to change of magneti%ation some heat is prodced in the coils of transformer "hen alternatingcrrent is spplied at its inpt This process is calleda) -ectification

b)

7riftingc)

Inductiond)

Hysteresis2) 6hich of the follo"ing la"s is satisfied by the en%=s la"7

a)

!araday 6aw of Induction b)

6aw of conser1ation of energyc)

6aw of conser1ation of charged)

.one of these


26/53

21) A steady crrent passing throgh the condctor prodces:a)

?oth electric and magnetic fields b)

A magnetic field onlyc)

An electric field onlyd)

.either electric nor magnetic field22) et electric field in a crrent carrying condctor is:

a)

The difference of electric fields of protons and electrons b)

The sum of electric fields of protons and electronsc) .egati1ed) *ero

23) The crrent "hich flo"s in the coil to oppose the dragging force on the coil is called:a)

7irect current b)

8teady currentc)

/ulsating currentd)

*ero2!) The magnetic field of indction is s 6aw b)

!araday>s 6awc)

6en9>s 6awd)

Ampere>s 6aw2*) 6eber per ampere is ?no"n as:

a) Mutual Inductance b) 8elf Inductance

c)

Induced e%m%fd) a and b are correct2+) Delf indction of the coil increases as the


27/53

31) AC Nenerator "or?s on the principle of:a)

8elf Induction b)

Mutual Inductionc)

Motional e%m%fd)

a and b are correct32) 6hen in mtal indction change of magnetic fl in secondary coil is increased then the mtal

indction bet"een the coils "ill:a)

?e 9ero b) Increasec) 7ecreased) .o change will occur

33) A straight condcting "ire is mo'ed "ith constant speed at right angle to a magnetic field >f the strengthof the magnetic field is decreased/ the indced crrent in the "ire "ill:a)

!luctuate b)

-emain samec)

Increased)

7ecrease3!) 6hich one of the follo"ing in JC Nenerator does not ha'e :

a)

Armature b) +ommutator

c)

8lip ringsd) Magnets

3$) The crrent "hich flctates from %ero to maimm and maimm to %ero is called:a)

8teady current b)

Alternate currentc)

7irect currentd)

/ulsating 7irect current3() >n electric motor Commtator is sed for:

a)

Inducing the current b)

Increasing the currentc) 7ecreasing the currentd) -e1ersing the current

3*) 6hen the coil is mo'ed to"ards he magnetic poles then:

a)

.o effect b) 6ight will appearc)

Heat will produced)

e%m%f will induce in the coil3+) Case of self indctance is:

a)

+hanges in flu3 in the same coil b)

+hange in current in the same coilc)

?oth a and b are wrongd)

?oth a and b are correct3-) Prpose of step do"n transformer is to ma?e the:

a) Input current same as output current b) utput current higher than input currentc) utput 1oltage lower than input 1oltage

d)

utput current lower than input current!) The core of a transformer is made of soft iron becase:a)

Iron is cheaper than copper b)

Iron is a good magnetic substancec)

Iron is a good conductor of currentd)

Iron has high melting point


28/53

!1) The core of transformer is sed to lin? the primary coil to the secondary coil 6hat type of lin? is this7a)

Thermal b)

Electrostaticc)

Magneticd)

Mechanical!2) A magnet is introdced onto the coil and a 'oltage is indced across the coil 6hich of the follo"ing factor

has no effect on the indced 'oltage7a)

Thic:ness of the wire of the coil b) The strength of the magnetic fieldc) The time in which magnet is introducedd) .umber of turns of the coil

!3) 6eber per meter s&are is e&i'alent to:a)

.ewton into ampere into meter b)

.ewton per amperec)

.ewton per meterd)

.ewton per ampere per meter!!) Crrent in a condctor prodced arond it:

a)

Magnetic field b)

An electric and magnetic fieldc) An electric field

d)

.one of these!$) 6hen the north pole of a bar magnet in electric motor approaches the face of a closed coil/ the face of the

coil becomes:a)

.o effect is obser1ed b)

!irst north pole then south polec)

.orth poled)

8outh pole


29/53

AD6ER EI

@1) A @2) A @3)A @!) J @$) A

@() C @*) J @+) 8 @-) J @1) 8

@11) J @12) C @13) A @1!) A @1$) 8

@21) A @22) J @23) J @2!) J @2$) J

@2() 8 @2*) J @2+) J @2-) C @3) A

@31) C @32) 8 @33) J @3!) C @3$) C

@3() J @3*) J @3+) J @3-) C @!) 8

@!1) C @!2) A @!3) J @!!) A @!$) C


30/53

CHAPTER o 1$1

Nal'anometer can be con'erted into an ammeter by connectinga%

A high resistance in series b%

A low resistance in seriesc%

A high resistance in paralleld% A low resistance in parallel

2

Densiti'ity of Nal'anometer is gi'en bya% +?.A b% C+?.Ac%

+C?.Ad%

?A.C+3

The de'ice "hich ma?es se of "et stone bridge isa%

Meter bridge b%

0oltmeterc%

hm Meterd%

/otentiometer! The de'ice "hich can measre emf of cells "ithot dra"ing crrent from them is called

a% /otentiometer b% Meter bridgec% 0oltmeterd%

hm Meter$

>n a circit 'oltmeter is al"ays connected ina%

8eries b%

/arallelc%

?oth 8eries and paralleld%

.one f These( P0 8o is sed to find

a%

+urrent b%

-esistancec% E%m%fd% All of These

*

A 50 meter is sed to finda%

+urrent

b%

-esistancec%

E%m%fd%

All of these+

To increase the accracy of potentiometera%

A uniform wire of small length should be used b%

Thic:ness of wire will be increasedc%

Thic:ness of wire will be decreasedd% A uniform wire of a large length should be used

-

The deflection of a coil of gal'anometer is directly proportional toa% -esistance of coil b%

8trength of magnetic fieldc%

+urrent passing through coild%

Area of coil

1

The process of redcing amplitde of 'ibration of coil of gal'anometer is calleda%

7rifting b%

7opingc%

8huntingd%

7amping11 6hich of the follo"ing de'ice is sed for measring resistance7

a% / ?o3 b% /otentio Meterc% hm Meterd%

Meter ?ridge


31/53

12

#or balance position of "heat stone bridgea%

-C-' R -2C-& b%

-2C- R -'C-&c%

--& R -2-'d%

--2 R -'-&13 8alanced position of "heat stone bridge is obtained "hen potential at the terminals of gal'anometer

a%

Is 8ame b%

Alteredc% 7ifferentd% Established

1!

The cople per nit t"ist of the sspension is e&al toa%

8um of deflection and restoring tor=ue b%

/roduct of deflection and restoring tor=uec%

7eflection per restoring tor=ued%

-estoring tor=ue per deflection1$

6hich of the follo"ing can be sed to measre the resistance7a%

hm Meter b%

Meter ?ridgec%

/o ?o3d% All of These

AD6ER EI

@1)J @2)J @3)A

@!)A @$)A @()8

@*)J @+)J @-)C

@1)J @11)8 @12)C

@13)C @1!)J @1$)J


32/53

CHAPTER 1(

1(1)

Dpeed of electromagnetic "a'e in free space is gi'en by:@a) QMo o @b) 1n Demi Condctor de'ices there is a:(m)

0alence band only(n) 0alence band and a medium forbidden gap(o) 0alence band and a narrow forbidden band(p)

0alence band and a wide forbidden gap1($)

The single Nermanim or Dilicon Crystal formed after adding the penta'alent imprity is?no"n as:(i) 8emi conductor (P)

/4. substance (:)

.4 type substance (l) /4type substance

1(() The t"o terminal Demi Condctor de'ice sed as a rectifier is called:(m)

7iode;(n)

Transistor(o) Triode(p)

/4type de1ice1(*)

The process of con'erting AC into J/C is called:(i)

Modulation(P) Amplification(:)

?iasing

(l)

-ectification1(+)

>n P4type Dbstance charge carrier are:(m) A and c%(n) /rotons(o)

Holes(p)

Electrons


33/53

1(-)

6hene'er a potential is applied across the P4n Fnction diode so as to increase the height ofthe Potential barrier/ the diode is said to be:(i)

+ho:ed(P)

?oth re1erse and forward biased(:) !orward biased

(l)

-e1erse biased1*)

The three terminal de'ice/ sed as an amplifier and broght re'oltion in Electronics iscalled:(m) 7iode(n) Transistor(o)

Triode(p)

/4type1*1)

>n 4type sbstance charge carrier are:(m) A and c(n)

/rotons(o)

Holes

(p)

Electrons1*2) The process of generating the effect of Adioo Dignal in Electromagnetic "a'e is called:(m)

Modulation(n)

Amplification(o) ?iasing(p)

-ectification1*3) 6hene'er a Potential is applied across the P4n Fnction diode so as to decrease the height of

the Potential barrier/ the diode is said to be:(m) +ho:ed(n)

?oth re1erse and forward biased(o)

!orward biased(p)

-e1erse biased

1*!)

The de'ice "hich rises the strength of a "ee? signal at the otpt is:(m)

Amplifier(n)

7ecorder(o) -ecorder(p) 7iode

1*$)

The process of adding imprity of Tri'alent or Penta'alent into Demi Condctor is called:(m) Modulation(n)

-ectification(o)

7oping(p)

?iasing1*()

The Demi Condctor mied "ith imprity of Tri'alent or Penta'alent is called:(i)

.one of these(P)

E3trinsic 8emi +onductor

(:)

Intrinsic 8emi +onductor(l) Electronic de1ice

1**)

8ase Emitter Fnction and 8ase4Collector Fnction of transistor are:(i) !orward biased and re1erse biased(P) -e1erse biased and forward biased(:) ?oth re1erse biased(l)

?oth forward biased1*+)

The semi4condctor de'ice "hich increases the strength of "ea? inpt signal at the otpt isa:


34/53

(m)

.4type semi conductor(n)

/4n diode(o)

Transistor(p)

/4type semi conductor1*-)

6hich &antity of adio signal is changed by transistor:(i)

All of these(P)

Amplitude(:)

!re=uency(l) Da1e length

1+)

6hich characteristic of adio signal is changed by transistor:(m) 5uality of sound(n)

?oth pitch and loudness(o)

/itch(p)

6oudness1+1)

Choose the right option for A.:(m)

Amplitude monitor(n)

Amplitude modulation(o)

Amplitude magnification(p)

Amplitude measurement1+2) The process in "hich the height of potential barrier of P4n diode is increased is called:

(m)

?oth re1erse and forward biasing(n) -e1erse biasing(o) !orward biasing(p)

?iasing1+3)

The process in "hich original signal is reco'ered from modlated signal is called:(m)

7oping(n)

?iasing(o)

-ectification(p)

7emodulation1+!) >n fre&ency modlation/ "hich one of the follo"ing of the original signal does not changed:

(m) /itch(n) Da1elength(o) !re=uency

(p)

Amplitude1+$)

The most commonly sed configration of transistor in electronic circits is:(a)

All of these(b)

+ommon collector(c)

+ommon4base(d)

+ommom4emitter


35/53

AD6ER EI

@1)

8 @2)

C @3)

J@!) C @$) C @() A

@*) J @+) C @-) J


36/53

@1) 8 @11) J @12) A

@13)

C @1!)

A @1$)

C@1() 8 @1*) A @1+) C

@1-) 8 @2) J @21) 8

@22) 8 @23) J @2!) J

@2$)

J


37/53

CHAPTER 1*

1)

Nallilean transformations are applicable in:a) All frames b) !rame of -eferencec)

.on4 Inertial !rame

d)

Inertial !rame2) .inimm energy re&ired for pair prodction is:a)

#'# Me0 b)

#&2 Me0c)

%"2 Me0d)

"%B Me03) 8lac? body radiations are:

a) Infra red and 1isible light rays b) All -adiationsc) 0isible light and ultra 1iolet raysd) ltra 1iolet and S4rays

!) Heisenberg=s ,ncertainty principle is:

a) (!() $ *

+

b)

(!() $ , c)

(!() $ ђ d)

-./0 .1 2,0#0 $) 6a'e natre of light is pro'ed by:

a)

/olari9ation b) ?lac: body radiationc) +ompton>s Effectd) /hoto electric effect

() inetic energy of Photo electrons cold be increased by:a)

7ecreasing the plate potential b)

?y decreasing the of incident light wa1e lengthc)

Increasing the of incident light wa1e lengthd)

Increasing the plate potential

*) .aimm change in "a'e length of S4rays photon cold be obtained "hen S4 rays are scattered at: a)

-ight angle b)

$"⁰ c) &B⁰ d)

"⁰ +) Range of "a'elength of 'isible light is:

a)

""⁰A """⁰A b) nm ""nmc) "% nm nmd)

&"""⁰A """⁰A-) Jal natre of light is pro'ed by:

a) 7a1isson and @ermer>s E3periment b) ?lac: body radiation

c)

+ompton>s Effectd)

/hoto electric effect1) The minimm light fre&ency re&ired for photo electric effect is called:

a)

.ormal fre=uency b)

+ut4ff fre=uencyc)

Threshold fre=uencyd)

.atural fre=uency


38/53

11) 3456 is the:a)

Da1e length of ma3imum energy b)

Ma3imum wa1e length of radiationc)

Da1e length of minimum energyd)

All of those12) The formla for the momentm of photon is:

a)

7

* b)

h

c)

*

7

d) *8

7

13) >f the fre&ency of light casing photo electric emission is dobled/ the ?inetic energy of photo electrons"ill be:a) The same b) *eroc) 7oubledd)

Hal1ed1!) The re'erse process of pair prodction is ?no"n as:

a)

Annihilation of energy

b)

Antipair productionc)

Materiali9ation of matterd)

Annihilation of particle into its antiparticle1$) Eistence of photon "as confirmed by:

a)

+ompton b) 7e>?rogilec) Einsteind) Ma3 plan:

1() Plan?=s Constant is analogos to:a)

Inertia b)

Da1e naturec)

Angular momentumd)

6inear momentum1*) 6ein=s displacement la" is:

a9

:;


39/53

21) Dpecial theory of relati'ity deals "ith:a)

bPects mo1ing with accelerated speed b)

bPects mo1ing with 1ariable speedc)

bPects mo1ing with constant speedd)

?oth a and b22) >nertial frame is:

a)

+onstant 1elocity b)

*ero 1elocityc) *ero accelerationd) All of these

23) According to the special theory of relati'ity/ the energy of an obFect depends pon:a)

Its mass only b)

Momentum and positionc)

0elocity and timed)

Mass and 1elocity2!) 6hich is one of the follo"ing is correct for the inertial frame of reference7

a)

Its is in uniform 1elocity b)

It has 9ero accelerationc)

.et force acting on it 9erod) All of these

2$) on inertial frame is that:a) Dhich has constant 1elocity b) Dhich has 9ero accelerationc)

Dhich has accelerationd)

.one of these;2() According to the theory of relati'ity all motions are:

a)

.either absolute nor relati1e b)

8ome time absolute some time relati1ec)

Absoluted)

-elati1e2*) The "a'elength of maimm radiation of a blac? body is in'ersely proportional to the absolte

temperatre is the statement:a) -ayleigh s 6awc) 8tefan>s 6awd)

Dien>s 6aw2+) E T⁴ is the mathematical statement of:

a) -ayleigh s 6awc)

8tefan>s 6awd)

Dien>s 6aw2-) The energy associated "ith a particlar "a'elength is in'ersely proportional to the forth po"er of "a'

elength >s the statement of:a)

-ayleigh s 6awc)

8tefan>s 6aw

d)

Dien>s 6aw3) According to the Plan?=s theory energy radiate from blac? body in the form of:a) /hotons b) /ac:etsc)

5uantumd)

All of the abo1e


40/53

31) Energy of photon is directly proportional to its:a)

Temperature b)

!re=uencyc)

Da1elengthd)

.one of the abo1e32) Prodct of fre&ency and "a'elength of photon is:

a)

Energy absorbed by photon b)

Absolute temperaturec) Energy radiates by photond) 0elocity of light

33) The photon is the particle/ "hich hasa)

Infinite rest mass b)

-est mass but no changec)

.o rest mass and no changed)

a and c are correct3!) 6a'e theory of light is nable to pro'e:

a)

?lac: body radiation b)

/hotoelectric effectc)

+ompton effectd) All of them

3$) 6a'e theory of light cannot pro'e the:a) -eflection of light b) /olari9ationc)

+ompton Effectd)

Interference of light3() .inimm energy re&ired by the electron to lea'e the metal srface is called as


41/53

!2) 6hen the fre&ency of incident radiation is dobled abo'e threshold fre&ency then the 'elocity ofphotoelectron "ill be:a)

-emain same b)

7oubledc)

Hal1edd)

Increase!3) S4rays is the re'erse process of:

a)

/air production b) +ompton Effectc) /hotoelectric effectd) a and b are correct

!!) >n pair prodction "e ha'e a pair of:a)

/osition and electron b)

/rotonsc)

Electronsd)

a and b are correct!$) >n annihilation process of matter:

a)

/rotons and electrons are con1erted for energy b)

Energy is con1erted into massc) Mass is con1erted into energy

d)

a and b are correct!() >n pair prodction


42/53

d)

It 1ariables$3) 6hich of the follo"ing is not tre for antiparticle of electron7

a)

It follows mass4energy relation b)

It posses the same charge as that of electronc)

It posses the same momentum as that of electrond)

Its charge to mass ratio is the same as that of electron$!) 6hich is not the reslt of special theory of relati'ity7

a)

6ength contraction b) 8pace4time transformationc) Time dilationd) Mass 1ariation

$$) The blac? body "hich is close to perfect blac? body is:a)

Translucent glass bo3 b)

+a1ity radiatorc)

?lac: holesd)

All f These


43/53

AD6ER EI

@1) a @2) c @3) b @!) c @$) a

@() b @*) a @+)d @-) a @1) c

@11) a @12) c @13) c @1!) a @1$) a

@1() c @1*) a @1+)d @1-) b @2) b

@21) c @22) d @23)d @2!) d @2$) c

@2() d @2*) d @2+) c @2-) a @3) d

@31) b @32) d @33) c @3!) d @3$) c

@3() c @3*) a @3+) c @3-) b @!) c

@!1) b @!2) d @!3) c @!!) a @!$) c@!() a @!*) b @!+) d @!-) a @$) c

@$1) a @$2) a @$3) b @$!) b @$$) b


44/53

CHAPTER 1+1+()

>n a hydrogen atom 8almer series electron falls into:(m)

n R (n)

n R 2(o)

n R '

(p)

n R &1+*) aser is the:(=)

?eam of electrons(r)

+oherrent bean of light(s) ?eam of ultra 1iolet rays(t)

All of these1++)

According to 8ohr=s theory/ electron re'ol'ing arond the ncles in a fied orbit radiates:(=)

Energy (r) S4rays (s)

W R ray 1+-)

The first Dpectral line emitted in yman Deries of Hydrogen atom "hen electrons fall from:(a)

n R

(b)

n R 2(c)

n R '(d)

n R X1-)

Dpectral lines in the 8almer Deries of Hydrogen atom lies in the region of:(m) ltra1iolet rays(n)

S4rays(o)

0isible light(p) Infra red rays

1-1)

According to the 8ohr=s theory/ anglar momentm of electron is integral mltiple of:(=)

h(r)

Y

(s)

* (t)

1-2) Range of "a'e length of S4rays is:(m)

&"" nm 44444444 "" nm(n)

"" nm 44444444 """ nm(o)

"" nm 44444444 "%""" nm(p) "% nm 44444444 nm

1-3) S4rays are prodces "hen:(=)

Electron falls to ground state(r)

Electron loses its energy in the 0icinity of nucleus(s) Electron Pumps to higher state

(t)

All of these1-!)

#re&ency of Photon emitted/ from 8ohr=s theory is gi'en by:

(m)

D

*

(n) E 4 Er h

(o)

4'%,e0n2

(p) .one of these


45/53

1-$)

Radis of 1st orbit of hydrogen atom is $3 oA Radis of fifth state of Hydrogen atoms is:(=) 2%,B oA(r)

'%2B oA(s)

2" oA(t)

Infinite1-()

The most stable state of yby is::

(=)

@round state(r)

Meta state(s)

Higher state(t) E3cited state

1-*) The process of collecting ecited electrons from nstable state into stable state is called:(=)

Induced absorption(r)

/opulation In1ersion(s) Emitted radiation(t) de e3citation

1-+)

6a'e length of maimm radiant energy in Hydrogen atom spectrm belongs to:(=)

6yman series

(r)

?almer series(s) /aschen series(t)

/fund series1--)

Nrond state energy of Hydrogen atom is:(=) *ero(r) '%&B e0(s) '%, e0(t)

4'%, e02)

>n Hydrogen atom spectrm longest "a'e length of radiations belongs to:(a)

6yman series(b)

?almer series(c) /aschen series(=)

/>fund series21)

mber fo photoelectrons emitted from a metal depends pon:(m) !re=uency of light(n) Da1elength of light(o) Intensity of light(p) 8peed of light

22)

6a'e natre of particle is lin?ed by:(m)

8peed of light(n)

/lan:>s constant(o)

Inertial mass(p)

Momentum of particle23)

The blac? body "hich is close to perfect blac? body is:(=)

+a1ity radiator(r)

?lac: holes

(s)

Translucent glass bo3(t) All of these

2!)

6a'e length of minimm radiant energy in hydrogen atom belongs to:(a)

6yman series(b) ?almer series(c)

/aschen series(d)

/>fund series


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2$)

inear and anglar momentm of electron of hydrogen atom is lin?ed by:(=)

/lan:>s +onstant(r)

5uantum number of state(s)

Energy of state(t)

rbital radius

AD6ER EI

@2()

8 @2*)

J @2+)

A

@2-) 8 @3) C @31) 8

@32) J @33) 8 @3!) 8

@3$) 8 @3() 8 @3*) 8

@3+) 8 @3-) J @!) J

@!1) J @!2) A @!3) 8

@!!) 8 @!$) J


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CHAPTER 1-1)

mber of etrons in -2,23$is:

(a)

B2(b)

&$(c)

&'(d)

#2

2)

>n clear #ission/ -2,23$is bombarded by:(a)

8low neutron(b)

High energy neutron(c) 6ow energy neutron(d) !ast .eutron

3)

The time in "hich half of parent nclear decay is called:(a)

6ife time(b)

Time of decay(c)

7ecay inter1al(d)

Half time!)

8reeder Reactor sed to con'ert:(a)

#22'$ into #&/u

2'# (b)

#22'B into #2/u

2'$

(c)

#22'B

into B,?a&&

and ',Kr $#

(d) #2

2'$ into B,?a&& and ',Kr

$# $) >n the nclear reaction:

*1! U 2He

! +01* U n VU decay/ a Parent ncles con'ert into a daghter ncles accompanied "ith:

(a) Alpha /article(b) Electron(c)

?eta /article(d) /ositron

1)

8inding fraction is the:(a)

?inding energy /er mass defect(b)

Mass defect /er binding energy(c)

Mass defect /er nucleon(d)

?inding energy /er nucleon11) Half ife of radioacti'e element is gi'en by:

(a)

EFGH

7


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(b)

"%,#'(c)

"%,#'

(d)

7

EFGH

12)

.ass deficit is the difference of:(a)

Increased mass and decreased mass(b)

Mass of .uclear +onstituents in free state and in combined state

(c)

Inertial mass and non4inertial mass(d)

.uclear mass and atomic mass13) Acti'ity of Radioacti'e nclei is gi'en by:

(a)

J

(b) J

(c)

K

(d)

.1!)

A material consisting of the fissionable isotopes of ,ranim is called the:(a)

-eactor fuel(b)

.uclear fuel(c)

Atom bomb fuel(d)

Atomic fuel

1$)

The process of con'erting non4fissionable ranim into fissionable is called:(a) 7isintegration(b) ?reeding(c) .one of these(d)

7ecay /rocess1()

Half life of -!P23- is:

(a)

2%&& 3 "& years;(b)

'%$" days(c)

,,2 years(d)

ne wee:1*) Jecay process in radioacti'e nclei ta?es place:

(a) +onditionally(b) 6inearly

(c)

E3ponentially(d) 8moothly1+)

Critical mass of fissionable isotope of ,ranim is:(a)

%"(b)

"% (c)

%"(d)

"%"1-)

> ;


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(a)

Acti1ity(b)

.umber of parent nuclei(c)

-elati1e acti1ity(d)

Half life

23)

The process of beta emission from a ncles in'ol'es the change in:(a) ?oth mass and charge number(b) Mass number(c)

.o change occurs(d)

+harge number2!)

According to the la" of radioacti'e decay/ nmber of parent nclei is e&al to:(a)

e4t (b)

." (c)

.one of these(d)

." e4t

2$) The process in "hich hea'ier ncles is formed from the combination of lighter nclei is called:(a) -adioacti1ity

(b)

!ission(c) Mass defect(d) !usion

@!() 8 @!*) J @!+) A


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AD6ER EI

@!-) 8 @$) C @$1) 8

@$2)

J @$3)

8 @$!)

8

@$$)

8 @$()

8 @$*)

8

@$+) 8 @$-) J @() J

@(1)

J @(2)

A @(3)

8

@(!) 8 @($) J


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CHAPTER 2% In treating a locali9ed cancerous tumor a narrow beam of

a%

Alpha -ays from +obalt ," is used b%

6aser beam from cobalt ," is usedc%

@amma -ays from cobalt ," is usedd%

?eta -ays from cobalt ," is used

2%

A Modern techni=ue of tracing comple3ity of molecules is calleda%

Tracer techni=ue b%

-adiologyc% Molecular techni=ued%

/olymeri9ation'% lcerationG cataract of eye and +ancer are the e3amples of

a% 0iral disease b% ?acterial diseasec%

8omatic diseased%

@enetic 7isease&%

-adio acti1e elements used as tracer in medicine area%

H'B'I

' and ,+&

b% ,+

2 and B'I'

c%

,+&

andd% 2"+a

&2 and H'

B%

The techni=ue by which the absorption of +2G the seat of /hotosynthesis and the distribution of plant food could be traced is called

a% -adiation Therapy b% /olymeri9ationc%

Auto4radiographyd%

Tracer techni=ue,%

+ancer of the thyroid glands is treated bya%

H'

b% ,+

& c%

B'I'

d% ,+

#

%

The age of the specimen such as dead bodyG woodG bone or fossilG could be measured by +& +alleda%

+arbon detector b% -adio Analy9erc% -adio +arbon datingd% -adio +arbon tracer

$%

8tudy and disco1ery of radio isotopes is made easier by a de1ice calleda%

@%M +ounter b%

+loud +hamberc%

8pectrometerd%

Tachometer#%

Electric field generator in @%M tube is due toa%

Ioni9ation of alcohol b%

6ow 1apor pressure of alcoholc% 6ow boiling point of alcohold%

All of these"% /ath of trac: of droplets of Alpha /articles in cloud chamber is a

a% -andom strea: b%

Indefinite strea:c%

+ontinuous strea:d%

7iscontinuous 8trea:


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%

In an Alpha 7ecayG mass number of parent nucleia%

-emains same b%

changes per 2 unitc%

7ecreases by & unitd%

increases by & units2%

In ?eta emissions from nucleus NNNNNNNNN are emitteda%

/rotons b%

.eutrinoc% /ositrond% Electrons

'% The rate of flow of blood is determined by

&% If a small =uantity of radio acti1e iodine NNNNNNNNN is ta:en in foodG most of it deposited ina%

Thyroid gland b%

?loodc%

Kidneysd%

?rain

B% n ioni9ing gasesG Alpha particles by capturing electronsG con1ert intoa% Energy

b%

Helium Atomc% -adio acti1e particlesd% .one f These

AD6ER EI

@1)C @2)A @3)C

@!)C @$)C @()C

@*)C @+)J @-)8

@1)C @11)C @12)C

@13)A @1!)A @1$)8


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XII Phy Mcqs physic question