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Dear Parents
Warm Greetings!
Summer Holidays are the most enjoyable period
for the children after a heavy and tedious
journey of an academic year. But utilizing these
holidays to rewind their academic is also very
important.
Importance of holiday home-work {For
Students}
1. Enlighten your Creative Skills.
2. The assignments tend to make you get
better as you get enough practice.
3. Definitely makes you understand concept
better.
4. You can stay away from reprimands if you
do it correctly and on time.
LUCKNOW PUBLIC SCHOOL SEC-D
HOLIDAY HOMEWORK
L.P.S SEC-D HOLIDAY-HOMEWORK-XI PCM P a g e | 2
CLASS XI
PHYSICS (042)
SESSION: 2018-19
GUIDELINES:-
1. Do all the questions in a separate H/W register in good handwriting.
2. These questions are very important and asked in Exams.
Date of Submission: 2nd July 2018 Subject Teachers: Mr. Brijesh Kumar
Mr. D.P. SINGH
Q1. What is Physics? Discuss the relation between physics and technology.
Q2. The fate of society is linked with the development of physics. Comment.
Q3. What is the role of physics in daily life?
Q4. State the various forces in nature.
Q5. Write the relative strength of various forces in nature.
Q6. Define the following terms: and in increasing order
Light year, Astronomical unit, Parsec.
Q7. How many astronomical units make 1 parsec?
Q8. Define atomic mass unit and express in kg.
Q9. What is the difference between mN, Nm and nm?
Q10. Why do we have different units for same physical quantity?
LUCKNOW PUBLIC SCHOOL SEC-D
HOLIDAY HOMEWORK
L.P.S SEC-D HOLIDAY-HOMEWORK-XI PCM P a g e | 3
Q11. State the principle of homogeneity of dimensions.
Q12. If x =a+bt+ct2, where x in meters and t in seconds. What are the units and
dimensional formulas of a,b and c?
Q13. The velocity v of a particle depends upon the time ‘t’ according to the equation
Determine the units of a, b, c and d. What physical quantities
they represent. All have SI units.
Q14. Verify the dimensional correctness of the following relations:
(i) v = u+at [v- final velocity, u- initial velocity, a- acceleration, t- time, s-
displacement]
(ii) (ii) s = ut + (½)at2
(iii) (iii) V = IR + W/Q + P/I [I-current, R- Resistance, W- work, Q- charge, P-
power]
Q15. The frequency of a wave moving on a string is known to depend upon the mass
per unit length of the string (m), its length (l) and the tension in the string (T). Use
dimensional analysis to obtain a relation for it.
Q16. Which of the following have same dimensions: (i) Force, pressure, stress. (ii)
Work, energy, force. (iii) momentum, velocity, impulse
Q17. In a particular system unit of length, mass and time are chosen to be 10cm, 10 g
and 0.1second respectively. What will be the unit of force in this system?
Q18.The area of a square plate is calculated by measuring the length to be 5.5 cm. If
the scale used has a least count of 0.1 cm then what is the maximum percentage error
in the area?
LUCKNOW PUBLIC SCHOOL SEC-D
HOLIDAY HOMEWORK
L.P.S SEC-D HOLIDAY-HOMEWORK-XI PCM P a g e | 4
Q19.Define dimension of a physical quantities. Write three limitations of dimensional
analysis.
Q20. y=A sin (ωt – kx); find the dimensional formula of k and ω, where y,A and x are
in metre and t in seconds.
Q.21
Q22. The air bubble formed by explosion inside water perform oscillations with time
period X is connected from X=ab2C. Calculate the percentage error in X, when % error
in a, b, c are 4, 2, and 3 respectively.
LUCKNOW PUBLIC SCHOOL SEC-D
HOLIDAY HOMEWORK
L.P.S SEC-D HOLIDAY-HOMEWORK-XI PCM P a g e | 5
Q23. Percentage error in the measurement of height and radius of cylinder are x and y
respectively. Find the percentage error in the measurement of volume. Which of the
two measurements height or radius needs more attention?
Q24. Orbital radius of mercury around the sun is 0.38 A.U. Find the angle of maximum
elongation for mercury and its distance from earth when the elongation is maximum.
Q25. Find the dimensions of linear momentum and surface tension in terms of velocity
v, density p and frequency v as fundamental quantities.
Q26. A gas bubble, forms an explosion under water, oscillates with a period T
proportional to pa db Ec, where p is the static pressure, d is the density of water and E is
the total energy of the explosion. Find the values of a, b and c.
Q27. Find the dimensions of a/b in the equation: F = a√x + bt, where F is force, x is
distance and t is time.
Q28. Two specific heat capacities of a gas are measured as Cp=(12.28±0.2) units and CV
=(3.97±0.3) units. Find the value of gas constant R with error limits, where
CP-CV=R.
Q29. In gas equation ( P+ a/v2)(V-b) = RT, where P is pressure, V is volume, T is
temperature. Find the dimensional formula of a/b.
Q30. Young's modulus of steel is 19 x 1010
N/m 2. Express it in dyne/cm
2. Here dyne
is the CGS unit of force.
Q31. If the dimensions of length are expressed as Gx c
y h
z , where G,c,h are the
universal gravitational constant, speed of light and plank’s constant respectively, what
are the value of x,y,and z ?
Q32. 5.05g of a substance occupies 1.5cc. Express its density in terms of significant
figures.
LUCKNOW PUBLIC SCHOOL SEC-D
HOLIDAY HOMEWORK
L.P.S SEC-D HOLIDAY-HOMEWORK-XI PCM P a g e | 6
Q33. The length and breadth of a field are measured as (100+4) m respectively. What is
the area of the field?
Q34. The size of the hydrogen atom is about 0.4 A. Calculate the total volume (in m3)
of a mole of hydrogen atom? Given 1Å=10-10
m.
Q35. The light emitted by a quasar takes billions of years to reach the Earth. What is the
distance of a quasar from which light takes 2.0 billion years to reach the earth?
Q36. Find dy/dx,
(i) y = 4x3 + πx
2 - 10
(ii) y = 1/x4
(iii) y = (x2 + 3)
(x
4-8)
Q37. Differentiate the following with respect to x :-
(i) sin2x
(ii) xsinx
(iii) sin(ax+b)
Q38. Integrate the following w. r. to x
(i) x3
(ii) x3 + 1/x3
(iii) (x – 1/x )2
Q39. Solve the following
(i) ʃ (x2 + sinx ) dx
(ii) ʃ π(ax+bx2+1/x)dx
Q40. Every walk of life is effected by the technological application of physics.
Justify this point of view.
*****
LUCKNOW PUBLIC SCHOOL SEC-D
HOLIDAY HOMEWORK
L.P.S SEC-D HOLIDAY-HOMEWORK-XI PCM P a g e | 7
CLASS XI
CHEMISTRY (043)
SESSION: 2018-19
GUIDELINES:-
1. Do all the questions in a separate H/W register in good handwriting.
2. These questions are very important and asked in Exams.
Date of Submission: 2nd July 2018 Subject Teachers: Mr. MANEESH AWASTHI
Mr. FURQAN AHMAD
MOLE CONCEPT
1. Calculate the number of moles and atoms in 44.8 litres of SO2 at STP.
2. One million atoms of silver weigh 1.79 x 10-16 g. What is the atomic mass of silver?
3. Calculate the mass of CO2 molecules whose number is equal to the number of molecules present in 40g
oxygen.
4. Calculate the difference in the number of atoms contained in lg C-12 and lg C-14.
5. Calculate the number of molecules present in 12.3 g MgSO4 -7H2O. Calculate the mass of Na2CO3 which will
have molecules equal to those present in 12.3g of MgSO4 .7H2O.
6. Calculate the mass of the following and arrange them in increasing order.
(a) one gram atom (one mole atom) of nitrogen. (b) one silver atom
(c) one mole of O2 molecules (d) one mole of argon gas (e) 1023 atoms of C-12
7. A solution contains 25% water, 25% ethanol and 50% acetic acid by mass. Calculate the mole fraction of
each component.
LUCKNOW PUBLIC SCHOOL SEC-D
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L.P.S SEC-D HOLIDAY-HOMEWORK-XI PCM P a g e | 8
8. Calculate the mass fraction and mole fraction of ethyl alcohol and water containing 9.2 g alcohol and 18 g
water.
9. 2.82 g of glucose are dissolved in 30 g water. Calculate the molality of solution and mole fraction of water.
10. What is the mole fraction of the urea in 2.5 m aqueous solution ?
11. The mole fraction of H2SO4 in sulphuric acid solution is 0.15. What is the molality of the solution ?
12.Calculate the number of molecules of crystalline oxalic acid (H2C2O4 .2H2O) in 100 mL of 0.2M oxalic acid
solution.
13. Calculate the mole fraction of ethanol and water in An aqueous solution of ethanol in water is 1.54 molal.
Calculate the mass of ethanol in 250 g of solvent.
14. Concentrated HNO3 is 69% by mass. What is the volume of the solution which contains 23g concentrated
HNO3? Density of concentrated HNO3 is 1.41 g/cc.
15. In an organic compound , C =4O%, H = 6.6 % and O = 53.4 %. If the VD of the organic compound is 30, what
is its molecular formula ?
16. In an organic compound , the mass % of C = 85.8 and % H = 14.2. If vapour density of the compound is 28,
what is its molecular formula?
17. Mass % in an inorganic compound is Na = 29.11, S = 40.51, O = 30.28 What is its empirical formula?
18. In an inorganic compound , mass % of O =39.18, K = 3184 and Cl = 28.98. If molecular weight of the
inorganic compound is 122.5, what is its molecular formula ?
19. 1.5 g of impure sodium sulphate on treating with excess of barium chloride solution gives 1.74 g BaSO4.
What is the % purity of sodium sulphate in the sample?
20. Calculate the weight of Fe obtained by reducing 1 kg of ferric oxide. [Ans : 0.7 kg]
21. 10g sample of impure H2SO4. is treated with 7g chalk. The chalk left unreacted is 2.2 g. Calculate the %
purity of H2SO4.
22. 1.2 g sample of impure sodium chloride on treatment with excess of AgNO3 solution gave 2.4g AgCl.
Calculate the % purity of sodium chloride sample.
LUCKNOW PUBLIC SCHOOL SEC-D
HOLIDAY HOMEWORK
L.P.S SEC-D HOLIDAY-HOMEWORK-XI PCM P a g e | 9
ATOMIC STRUCTURE
1. Calculate wavelength of the radiations when the electron jumps from Ill to II orbit in
H-atom. The electronic energy in II and III Bohr orbit of H atom are -5.42x10-12 and —
2.4l x10-12 erg respectively
2. The energy E for an electron in H-atom is -21.7 x 10-12 /n2erg. Calculate the energy
required to remove electron completely from n = 2 orbit. Also calculate the longest
wavelength of light that can be used to cause this transition.
3. The ionisation energy of H atom is 2.179x10-18 J. Calculate the second IE of the He-
atom.
4. The electron energy of H atom in the ground state works out to be —2.18x 1043
J/atom. Calculate tl change in the position of electron if 1.938 >< 1048; supplied to
each H-atom ?
5. Calculate the wavelength of the radiation whose energy is : (a) 3.97 x10-8 erg, (b)
7.95x 10-19 Joule
6. The wavelength of a radiation is 3x10-7 metre. Calculate the energy of one mole of
photons.
7. Calculate the Wavelength of a photon whose energy is 2 electron volt.
8. A radiation provides 2 joule of energy. If its wavelength is 400 nm Calculate the
number of photons.
9. Calculate the KE of the electron ejected when light radiation of frequency 5.2x 1014
sec-1 strikes a metal. Threshold frequency of metal is 5 x1014 sec-1.
10. A light of wavelength 4000 A0 falls on an alkali metal whose critical wavelength for
photoelectric effect is 6600 A0. Calculate the KE of photo-electron ejected.
LUCKNOW PUBLIC SCHOOL SEC-D
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L.P.S SEC-D HOLIDAY-HOMEWORK-XI PCM P a g e | 10
11. A ball of 150 g is moving with a velocity of 50 metre/ sec. Show that its wavelength
is too shon to be seen.
12. Calculate the momentum of a particle whose de-Broglie wavelength is 0.1 nm.
13. KE of an electron is 100 eV What is the de-Broglie wavelength ?
14. Calculate the ratio of the wavelength of electron and proton if the proton is
moving with half the velocity of electron.
15. Calculate the momentum of a particle whose wavelength is 2 A0. Given that
16. Calculate the wave number of the radiation having frequency of 4.5x 1014
cycles/sec.
17. Calculate the wavelength of a ball of mass 0.1 kg moving with the velocity of 10
m/s.
18. Ionisation energy of H-atom is l.312x 106 J/mol. Calculate the energy required to
excite the electron from ground state to first excited state.
***
LUCKNOW PUBLIC SCHOOL SEC-D
HOLIDAY HOMEWORK
L.P.S SEC-D HOLIDAY-HOMEWORK-XI PCM P a g e | 11
CLASS XI
MATHEMATICS (041)
SESSION: 2018-19
GUIDELINES:-
1. Do all the questions in a separate H/W register in good handwriting.
2. These questions are very important and asked in Exams.
Date of Submission: 2nd July 2018 Subject Teacher: Mr. DIWAKAR PANDEY
TRIGONOMETRY
Q.1. Convert 40◦ 20΄into radian measure.
Q.2. Convert 6 radians into degree measure.
Q.3. The minute hand of a watch is 1.5 cm long. How for does its tip move in 40 minutes? (use ∏=3.14 ).
Q.4. If the arcs of the same length in two circles subtend angles 65◦ and 110◦ at the centre , find the ratio of
their radii.
Q.5. Find the degree measures corresponding to the following radian measures (use ∏=
).
(i)
(ii) -4 (iii)
(iv)
Q.6. A wheel makes 360 revolutions in one minute. So how many radians does it turn in one second?
Q.7. Find the degree measures of the angles subtended at the centre of a circle of radius 100 cm by an
arc of length 22 cm (use ∏=
).
Q.8. In a circle of diameter 40 cm, the length of a chord is 20 cm. Find the length of minor arc of the chord.
Q.9. If in two circles, arc of the same length subtend angles 60◦ and 75◦ at the centre, find the ratio of their
radii.
LUCKNOW PUBLIC SCHOOL SEC-D
HOLIDAY HOMEWORK
L.P.S SEC-D HOLIDAY-HOMEWORK-XI PCM P a g e | 12
Q.10. Sin x=
, x lies in second quadrant. Find the value of other five trigonometric functions.
Q.11. Cot x=
, x lies in third quadrant. Find the value of other five trigonometric functions.
Q.12. Sec x=
, x lies in fourth quadrant. Find the value of other five trigonometric functions.
Q.13. Find the values of the trigonometric functions in the following .
Q.14. Prove that :
(i) Sin2
+ Cos2
- tan2
= -
(ii) Cot2
+ Cosec
+ tan2
= 6
Q.15. Find the value of : (i) Sin 75◦ (ii) tan 15◦
Q.16. Prove the following :
(i) (
)
( )
= (
) (ii)
=Cot2x
(iii)
(iv)
(v)
(vi)
(vii) )
(viii)
–
(ix)
=
LUCKNOW PUBLIC SCHOOL SEC-D
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L.P.S SEC-D HOLIDAY-HOMEWORK-XI PCM P a g e | 13
(x)
=
(xi)
=
(xii) –
(xiii)
(xiv)
(xv)
LUCKNOW PUBLIC SCHOOL SEC-D
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LUCKNOW PUBLIC SCHOOL SEC-D
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L.P.S SEC-D HOLIDAY-HOMEWORK-XI PCM P a g e | 15
22. Express the shaded region of the adjoining Venn diagram in the term of union and intersection of the sets A,
B and C.
23. Let A and B two sets such that : n(A) =20,n(A B)=42 and n(a B)=4, Find (i) n(B), (ii) n(A-B) ,(iii) n(B-A)
24. Shade the following sets: (i)A΄ (ii) A΄ )
A B
C
25. Two finite sets have an m and n elements. The total no subjects of the set is 56 more than total number of
subjects of the second set. Find the value of m and n.
26. in a locality of 500 people, people speak Bengali or Urdu or both. 270 speak Bengali only and 75 speak
Bengali and Urdu. How many of them speak Urdu? Also find how many speak Urdu only?
27. (A is equal to
(a) B only (b) A only (c) A (d)
28. Find the number of non empty subsets of (1,2,3.........n).
29. If A,B and C are three non empty sets then, (A ) (A IS EQUAL TO :
(a) A (b) A (c) A (d)
LUCKNOW PUBLIC SCHOOL SEC-D
HOLIDAY HOMEWORK
L.P.S SEC-D HOLIDAY-HOMEWORK-XI PCM P a g e | 16
LINEAR INEQUATIIONS
SECTION-A
1. Find the solution set of an inequality 3x-5<x+7,when x is
(a) Positive
(b) A whole number
2. Solve 5x<24 when x∈ N, and represent the solution set on the number line.
3. Solve 3x+8>2 when
(1) x is a real number
4. Solve -12x>30 when x is a natural number
5. Solve the inequality for real x
4x+3<6x+7
SECTION-B
6. Solve 2x-3<x+2≤3x+5, x∈R
Draw the graph of the solution set.
7. Solve the following system of in equations
-
X+
;
-
>X
8. A manufacturer has 600liters of a 12% solution of acid, How man litres of a 30% acid solution must be
added to it so that acid content in the resulting mixture will be more than 15% but less than 18%.
9. Find all pairs of consecutive odd natural numbers, both of which a larger than are such that their sum is less
than 40.
LUCKNOW PUBLIC SCHOOL SEC-D
HOLIDAY HOMEWORK
L.P.S SEC-D HOLIDAY-HOMEWORK-XI PCM P a g e | 17
LUCKNOW PUBLIC SCHOOL SEC-D
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LUCKNOW PUBLIC SCHOOL SEC-D
HOLIDAY HOMEWORK
L.P.S SEC-D HOLIDAY-HOMEWORK-XI PCM P a g e | 19
CLASS XI
ENGLISH CORE (301)
SESSION: 2018-19
GUIDELINES:-
1. The H/W should be done in respective class-work register in good handwriting.
2. Research work will be written in punch papers (max. 10 pages).
3. These questions may be asked in Unit Test-1.
4. Reading Part will be discussed.
Date of Submission: 2nd July 2018 Subject Teachers: Ms. SUSHMITA SARKAR
Mr. B.K.Singh
Mr. Alok Pandey
1. Read at least two works of fiction of your choice.
2. Draft notices for the following(one each)-
(a) Meetings
(b) Workshop
(c) Lost & Found
(d) Cultural event
3. Write a speech on – “ Why i want to become an Indian Ambassador to South Korea” in 150-200 words.
4. Research on the Egyptians Civilization- With particular reference to Tut’s Mummy & its discovery.
5. Research on sailing terminology & parts of a boat & gather information about Ile Amsterdam.
6. The recent storm caused great havoc in the city. Many buildings collapsed & several trees got
uprooted blocking traffic at several places. Write a report in 125 words.
7. Recently you went to your native village to visit your grandparents. You saw that some of the children
on the age group 5-14(school going age) remained at home, were working in the fields or were simply
loitering on the street. Write a letter to the editor of a national daily analysing the problem and
offering solution to it.
LUCKNOW PUBLIC SCHOOL SEC-D
HOLIDAY HOMEWORK
L.P.S SEC-D HOLIDAY-HOMEWORK-XI PCM P a g e | 20
CLASS XI
HINDI (302)
SESSION: 2018-19
GUIDELINES:-
1. Do all the questions in a separate H/W register in good handwriting.
Date of Submission: 2nd July 2018 Subject Teacher: Ms. KIRAN VERMA
x| & ued dk njksxk % ikB & 1 ;kn djksA
dkO; & ikB & 1 % dchj & HkkokFkZ i<+ks rFkk iz”uksRrj ;kn djksA
fuca/k & Hkkjrh; fdlku] ;qok ih<+h vkSj ns”k dk Hkfo’;] fy[kksA
i= & lM+dksa dh nqnZ”kk ij [ksn vkSj fpark O;Dr djrs gq, uxjikfydk v/;{k dks i=
fyf[k,A
*****
LUCKNOW PUBLIC SCHOOL SEC-D
HOLIDAY HOMEWORK
L.P.S SEC-D HOLIDAY-HOMEWORK-XI PCM P a g e | 21
CLASS XI
PHYSICAL EDUCATION (048)
SESSION: 2018-19
GUIDELINES:-
1. Do all the questions in a separate H/W register in good handwriting.
Date of Submission: 2nd July 2018 Subject Teacher: Mr. K.K.Kholia
UNIT- I
Q.1. Define physical education and explain the career options in physical education and
Sports.
Q.2. Explain the objectives of physical education.
Q.3. what do you mean by physical education? Mention the soft skills required for
careers in physical education.
UNIT- II
Q.1. Write an essay on Olympic movement.
Q.2. Write a note on:-
*Arjun Award
*Dhyanchand Award.
*Chacha Nehru Award.
*Rajeev Gandhi Award.
*****
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