[Edu.joshuatly.com]Times Afterschool.my Revision 2012 Physics [A04AB93C]

7/27/2019 [Edu.joshuatly.com]Times Afterschool.my Revision 2012 Physics [A04AB93C]

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84 SOALAN ULANGKJI SPM 2012

Physics

Analysis[4531/1][4531/2][4531/3]

Paper 1 Physics

Paper 2 Physics

Paper 3 Physics

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85SOALAN ULANGKJI SPM 2012

Physics Paper 1 [4531/1]

1. Which one o he ollowing physical quaniieshas he correc SI uni?

Physical Quantity SI unitsA Disance KilomeerB emperaure CelsiusC Weigh KilogramD ime Seconds

2. Which measuremen has he greaes value?A 1.13 x 108 mm C 1.13 x 108 pmB 1.13 x 108cm D 1.13 x 108 nm

3. Among he ollowing reading, which is measured by usingvernier calipers?A Te diameer o a wire = 0.357 cmB Te exernal diameer o a es ube = 1.43 cmC Te lengh o a sring = 43.2 cmD Te hickness o 100 pieces o paper = 0.517 cm

4. Which o he ollowing is NOT a base uni?A Joule C KilogramB Ampere D Second

5. Diagram below shows he velociy-ime graph or a moving

objec.

Te objec is moving wih a decreasing velociy aA 0 s o 2 s D 6 s o 8 sB 2 s o 4 s E 4 s o 8 sC 4 s o 6 s

6. I is ound ha he ully loaded rolley is harder o move

and harder o sop compared wih he empy rolley. Tis isbecause he ully loaded rolley hasA less energy C a bigger volumeB a larger weigh D a larger ineria

7. A srip o icker ape is pulled a consan speed under a

vibraing arm. Te arm vibraes regularly, making 50 dos persecond.

Wha is he speed o he ape?A 2.0 cms-1 C 100 cms-1

B 91 cms-1 D 200 cms-1

Each quesion is ollowed by eiher hree, our or ve opions. Choose he bes opion or each quesion and hen blacken hecorrec space on he answer shee.

8. Diagram below shows rolley A and B o same mass on aricionless plane. rolley A moves and collides wih hesaionary rolley B.

Which o he ollowing saemens is true?

A Te collision is an elasic collisionB Boh rolleys do no undergo changes in momenumC Te oal momenum beore and aer he collision is

he sameD Te oal kineic energy beore and aer he collision is

conserved

9. Diagram below shows a orce, F pulling objec A and B on asmooh a surace.

I A and B move wih an acceleraion o 2 ms-2 in hedirecion o F, nd he value o F.A 4 N D 30 NB 10 N E 60 NC 20 N

10. Te exension o a spring is measured when dieren weighsare hung below i. Te graph o exension agains load isshown below.

Wha is he work done in pulling he spring when he load is0.4 N?

A 0.01 J C 0.1 JB 0.02 J D 1.0 J

20cm dot

Beforecollision Aftercollision

A B

u vAtrest

plasticineplastisin

F

A

B

3kg

2kg

smoothsurfacepermukaanlicin

spring

Load

0.10.2 0.3 0.4

load/N

beban/N

extension/cm

1

2

3

4

5

10

21 3 4 5 8760

-10

time/s

velocity/ms-1



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11. Diagram below shows a lady wearing high heels and wearingspor shoes.

Which comparison is correc?A Pressure on X = Pressure on YB Pressure on X < Pressure on YC Pressure on X > Pressure on Y

12. Diagram below shows a mercury baromeer

Which o he ollowing will cause he heigh h o change?A A change in he graviaional acceleraion o he earhB A change in he diameer o he glass ubeC Te evaporaion o mercury in he bowlD Te glass ube is held in a slaning posiion

13. Diagram X shows a waer manomeer beore i is connecedo a gas supply.Diagram Y shows he manomeer when i is conneced o agas supply.

Wha is he excess pressure o he gas supply aboveamospheric pressure?

A 10 cm waer C 40 cm waerB 20 cm waer D 50 cm waer

14. Diagram below shows an objec being removed rom he

beaker.

Wha happens o he reading o he spring balance?A Increases C Remains consanB Decreases

15. Diagram below shows he wing o an aeroplane ha hashe shape o an aerooil. Which par o he aeroplane willexperience a lower pressure?

16. Figure below shows a meal block o 4.0 kg wih a specichea capaciy o 500 J kg-10C-1.

Wha is he increase in emperaure aer he heaer has beenswiched on or 10 seconds?A 0.4 0C C 2.5 0CB 0.8 0C D 5.0 0C

17. Te diagram below shows a mercury hermomeer. Tedisance beween he -100C and he 1100C marking is 25 cm.

A which emperaure is he end o he mercury hread 15 cmrom he -100C mark?

A 250C C 620CB 480C D 720C

18. Ice a a emperaure o -200C is heaed a a seady raeunil i changes o waer a 300C. Which o he ollowingemperaure-ime graphs bes describes he process above?

-100C 1100C

15cm

25cm

Temperature

Time30 30

30 30

-20 -20

-20-20

0 0

0 0

A

B

C

D

Temperature

Temperature Temperature

Time

TimeTime

h

Vacuum

Diagram X Diagram Y

A

D

C

B



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19. Figure below shows Aluminum blocks P and Q which are inconac wih each oher. Te iniial emperaure o P and Qare 800 and 400 respecively.

Te blocks ound o be having he same emperaure aersome ime. Which o he ollowing saemens is correc?A Termal equilibrium has been achievedB Te quaniy o hea in P is he same as in Q C Te rae o hea ranserred by P is higher han ha o QD Te rae o change in emperaure o P is aser han ha

o Q

20. A 1000 W elecric heaer is immersed in 1.5 kg o a liquid

and swiched on or 3 minues. Te emperaure o heliquid rises by 30 0C. Wha is he specic hea capaciy o heliquid?A 1.5 x 103 J kg-1 0C-1 C 4.0 x 103 J kg-1 0C-1B 2.1 x 103 J kg-1 0C-1 D 6.4 x 103 J kg-1 0C-1

21. Diagram below shows he side mirror o a car.

Which are he characerisic o he image ormed by hemirror?A real and invered C virual and same sizeB real and magnied D virual and diminished

22. An objec is placed in ron o a convex lens o ocal lengh20 cm. A sharp image, enlarged 5 imes is ormed on a screenplaced behind he lens. Wha is he image disance?A 20 cm C 100 cmB 24 cm D 120 cm

23. Diagram below shows an objec, O being placed beween heocal poin, F and he cenre o curvaure, C.

Te naure o he image ormed isA Virual, uprigh and diminishedB Virual, invered and enlargedC Real, invered and diminishedD Real, invered and enlarged

C F

convex

mirror

24. Wha are he required condiions or he lens wih ocallengh o be used as an objecive lens or a microscope?

Type of lens Object distanceA Convex Less han B Convex Beween and 2C Concave Less han

D Concave Beween and 2

25. Te phenomenon ha causes he swimming pool o appearshallower han he rue deph isA reracion C reecionB oal inernal reecion D diracion

26. Which o he ollowing is an example o a ransverse and alongiudinal wave?

transverse wave longitudinal waveA ligh waer ripples

B radio soundC sound lighD waer ripples radio

27. Diagram below shows he displacemen- ime graph o awave.

Wha is he requency o he wave ?

A 8 Hz C 4 HzB Hz D Hz

28. Diagram below shows he apparaus or orming a whie lighspecrum on he screen. A cardboard is hen placed in hespace labeled X

Wha will happen o he image on he screen?A Te widh o he specrum will decreaseB A par o he specrum canno be seenC Te brighness o he specrum diminishes

P Q

s/

t/s

5

-5

02 4 6 8 10

x

cardboard

glassprismlens

screen

whitelight



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29. Diagram below shows he waves raveling rom region X oregion Y. PQ is he boundary beween he wo region.

Which o he ollowing is rue?A Region X is shallower he region YB Velociy o waves decreasesC Wavelengh o he waves increasesD Frequency o he waves decreases

30. Diagram below shows a loudspeaker ha is generaing aconinuous sound wave o requency 100Hz in air.

Which o he ollowing diagrams bes display how he soundcauses a paricle o move during 0.01 s?

31. Which graph shows he relaionship beween poenialdierence, V and curren, I or an ohmic conducor?

32. Diagram below shows a curren o 0.5A passing hrough abulb.

Te quaniy o charges ha passes hrough he bulb perminue isA 10 C D 40 CB 20 C E 50 CC 30 C

33. A 1.0 resisor and a 2.0 resisor are conneced in series

across a 12 V d.c. supply. Wha is he curren I in he circui?A 0.25 A C 6.0 AB 4.0 A D 12 A

V

I

V

I

V

I

V

I

A

B

C

D

0.5A

34. Which o hese elecrical appliances consumes he greaesamoun o energy?

35. Te curren volage graphs or our dieren maerials aregiven below.

Which maerial labeled A, B, C or D, has he highesresisance?

36. Te efciency o he ransormer as shown below is 75%.

I he oupu is 30 W, he curren owing in he primary coil isA 0.6 A D 1.67 AB 0.8 A E 2.00 AC 1.0 A

37.A transformer consists of one coil with 1200 turns and a secondcoil, with a total of 120 turns, which can be tapped at various

places.

Which pair o erminals should be conneced o a 12 V, 24 Wlamp or i o be lighed normally?A R C SU

B RV D V

38. Te diagram shows a beam o elecrons enering a magneiceld.

Wha is he eec o he magneic eld on he elecron?A Tey are deeced ino he plane o he diagramB Tey are deeced ou o he plane o he diagramC Tey are deeced owards he botom o he diagramD Tey are deeced owards he op o he diagram

regionX

RegionYP

Q

P

P

P

P

P

A

B

C

D

Current,A

Voltage,V

AB

C

D

input output

24V

240V

1200

40

40

20

20

R

S

T

U

V

electronbeam

magnetic

field



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electromagnet

elektromagnet

bell

loceng hammer

pemukul

contactssesentuh

switch

suis

LDR

10k

6V

LDR

10k

6V

LDR

10k

6V

LDR

10k

6V

A

B

C

D

39. An elecric bell works on elecromagneism. Which o heollowing can help o make he bell sound louder whenswich is closed?

A Increased he diameer o he coilB Reversed he polariy o he dry cellC Increase he number o urns in he coil

40. Te diagram below shows a coil in a magneic eld

When he coil is par o a d. c. moor, wha mus beconneced direcly o X and Y ?A d. c. supply C so iron coreB slip ring D spli ring commuaor

41. ransisor can be used as an auomaic swich. Which one ohe ollowing circui will allowed he ligh bulb o li whenligh all ono LDR (ligh depending resisor)?

42. Te variaion wih ime o he wo inpus o a NAND gaeare shown

NS

X Y

Input1

Input2

time

time

Wha is he correc variaion wih ime o he oupu o heNAND gae?

43. Below shows he arrangemen o 4 idenical diodes in acircui. Te poiner o he galvanomeer deecs o he righ

when he swich is closed.

Wha happens o he galvanomeer poiner when hepolariies o he dry cells are reversed?A Deecs o he righ C Does no deecB Deec o he le D Vibraes a he 0 mark

44. Te diagram below illusrae a cahode ray ube

Beween which wo poins would you connec a highpoenial dierence in order o produce cahode rays?A PQ C UB RS D VW

45. Te ollowing race is shown on he screen o an oscilloscopewhen i is conneced o a ransormer. Te scale is se a 5 V

per cm.

Wha is he value o he peak volage?A 4 V C 10 VB 5 V D 20 V

time

time

A

B

time

time

C

D

galvanometer

filament

cathodeanode

screen

P

QR S

T

U V

W

positionoftracewhennopotentialdifferenceisapplied



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46. Deermine he value o X, Y and Z or he radioacivereacion equaion below:

X Y ZA 98 40 -4

B 98 40 -1C 98 32 +1D 99 54 -1

47. Te diagram shows he apparaus used in an experimenin which barriers o various maerials are placed in urn

beween dieren radioacive sources and a deecor.

Te able below shows he coun raes recorded by hedeecor or our sources.Which source emis alpha paricles only?

48. A pupil invesigaes he peneraing power o radiaion rom aradioacive source.

Te able shows her resuls.

Te source emisA alpha and bea-paricles C bea-paricles onlyB bea-paricles and gamma-rays D gamma-rays only

49. Which nuclear reacion shows nuclear ssion?A

B

C

50. A radioisoope has a hal-lie o 2 minues. Wha can bededuced rom his saemen?A Aer minue, o he isoope remains

B Aer 1 minue, o he isoope remainsC Aer 4 minues, o he isoope remainsD Aer 4 minues, none o he isoope remains.

radioactive

source

Barrier

GMtube

HeHH4

2

2

1

2

1+

NneutronN15

7

14

7+

nXeSrU1

0

141

54

95

38

239

923++

END OF QUESIONS PAPER

enXeMonUZY

X 01

0

136

56

1

0

235

9242 ++++

radioactivesource

GMtube

absorber

tocounter 1cm



8/36



Section A[60 marks]

Answer all quesions in his secion.

1. Diagram below shows hree idenical logic gaes combined o orm a single logic gae

(i) Name he logic gae used in he combinaion circui.__________________________________________________________________________ [ 1 mark ]

(ii) Base on he combinaion o logic gaes above, complee he ruh able below

[ 1 mark ] (iii) Name a single gae ha can represens his se o combinaion gaes

__________________________________________________________________________ [ 1 mark ]

2. Figure below represens he moion o a car along a sraigh road. As he car approaches a small own, i slows down. Te carravels a a consan speed rom he sar o he own o he end o he own. Aer passing hrough he own, he car speeds up.

(a) Calculae he disance ravelled by he car hrough he own. [2 marks]

(b) Te car acceleraes aer passing hrough he own. Calculae he acceleraion. [2 marks]

(c) A second car is saionary on he road a he poin where he own sars. I acceleraes uniormly or 30sand reaches a speed o 10 ms-1. Deermine wheher his car reaches he end o he own in 30s. [2 marks]

A

B

X



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4. Figure (a) below shows a ray o ligh being reraced a a glass surace. Figure (b) shows he inciden ray a a dieren angle.

(a) (i) Wha is mean by reracive index?________________________________________________________________________________________________________________________________ [ 1 mark ]

(ii) Calculae he angle ha he reraced ray makes wih he normal in gure (b) above. [2 marks]

air

ud

glass

air

glass

600

360

300

refractedray

(a) (b)

3. Diagram below shows an alcohol lamp being used o hea a beaker o waer on a ripod sand.

(a) Sae he energy change when using he alcohol lamp o hea he waer._______________________________________________________________________

_______________________________________________________________________ [ 1 mark ]

(b) Te mass o waer is 0.5 kg and he specic hea capaciy o waer is 4200 J kg-1oC-1 Te iniial emperaureo waer is 280C. Calculae he energy absorbed by he waer o reach 60 0C. [2 marks]

(c) I 1 g o alcohol can conains 2000J o hea energy, deermine he mass o alcohol required o heahe waer rom 280C o 600C. [2 marks]

(d) Using heory kineic molecule, explain why on heaing he waer emperaure rises._______________________________________________________________________

_______________________________________________________________________ [2 marks ]



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(b) A suden produces wave rons in a ripple ank o demonsrae reracion, as shown in he gure below. He places a shee oglass under he waer on he righ hand side o he ank. Te arrows show he direcion o movemen o he wave ron.

(i) Sae wha is mean by a wave ron.______________________________________________________________________ [ 1 mark ]

(ii) Sae wha happens o each o he ollowing quaniies as he wave rons change direcion.1. wavelengh : ____________________________________________________________2. speed : ____________________________________________________________

3. requency : ____________________________________________________________ [3 marks]

5. Diagram (a) and diagram (b) shown an experimen o invesigae how he diameer o a wire aecs is resisance.

(a) Name he physical quaniy represened by he gradien o he volage curren graph.______________________________________________________________________ [ 1 mark ]

(b) Observe diagram (a) and diagram (b)

(i) Compare he diameer o he resisance wire______________________________________________________________________ [ 1 mark ](ii) Compare he gradien o he volage curren graph______________________________________________________________________ [ 1 mark ]

(iii) Compare he resisance o he wires.______________________________________________________________________ [ 1 mark ]

(c) Base on he answer in (b) above,(i) sae he relaionship beween V and I.______________________________________________________________________ [ 1 mark ](ii) Sae he law ha relae he V and I______________________________________________________________________ [ 1 mark ]

(d) (i) Base on he diagram (a) or diagram (b) wha will happen o he gradien o he graph i anoher idenical wire isconneced beween X and Y?

______________________________________________________________________ [ 1 mark ](ii) Explain your answer.______________________________________________________________________ [ 1 mark ]

A

V

A

V

resistance wireDiagram (a)

Diagram (b)

V / v

I / A

V / v

I / A

X

X

Y

Y

wavefront

movingtotheright

glasssheetunderthe

surfaceofthewater

edgeoftherippletank



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6. Diagram (i) shows a es ube lled wih sand was oaing in waer. Diagram (ii) shows he same es ube was aken ou romwaer and pu ino a liquid X.

(a) Observe Diagram (i) and Diagram (ii)(i) Compare he deph, h where he es ube sinks in hese wo siuaions._______________________________________________________________________ [ 1 mark ](ii) Compare he densiies o waer and liquid X_______________________________________________________________________ [ 1 mark ]

(iii) Sae he relaionship beween he densiies and h_______________________________________________________________________ [ 1 mark ]

(b) On Diagram (i), name and labeled wo orces ha ac on he es ube. [2 marks]

(c) (i) Wha is he relaionship beween hese wo orces ha you labeled._______________________________________________________________________ [ 1 mark ](ii) Name he physics principle involved._______________________________________________________________________ [ 1 mark ]

(d) Name an insrumen ha making used o his principle o measure densiy o a liquid.

_______________________________________________________________________ [ 1 mark ]

7. Figure below shows apparaus ha is used o measure he acceleraion o a alling card.

Tere is a square hole in he cenre o he alling card. When he card blocks he ligh beam, no ligh reaches he LDR (lighdepending resisor). A compuer records he poenial dierence across he LDR. Te variaion o his poenial dierence wihhe ime elapsed aer releasing he card is shown in he graph below.

lightbeam

card 6V

0V

LDRLED

NOT

to

computer

pulse1 pulse

0

1

2

3

4

5

0.05 0.10 0.15 0.20 0.25

time/s

p.d/V

Diagram (i) Diagram (ii)



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(a) (i) Sae wha happens o he resisance o he LDR as he card alls._______________________________________________________________________

_______________________________________________________________________ [ 1 mark ]

(ii) Explain why he p.d across he LDR rises in pulse 1._______________________________________________________________________

_______________________________________________________________________ [2 marks]

(b) Te inpu logic level o he NO gae changes as he p.d in graph above varies.Te LED (ligh emiting diode) lighs up when here is curren in i.Te LED hereore shows he oupu o he NO gae.Sae and explain wha happens o he LED as he card alls hrough he ligh beam._______________________________________________________________________

_______________________________________________________________________ [2 marks]

(c) (i) Te disance ravelled by he card is he same during each pulse.

Te average speed o he card during pulse 1 is 1.0 ms-1.Base on he graph above, calculae he average speed o he card during pulse 2.

[2 marks]

(ii) Te card akes 0.103 s o accelerae rom he average speed o pulse 1 o he average speed o pulse 2.Calculae he acceleraion o he card.

[3 marks]

8. Radium-228 has a hal lie o 1620 years. Tis nuclide is radioacive and undergoes a series o decay o orm a more sable

bismuh-216 nuclide. During he decay o radium-228 ( ) o bismuh-216 ( ), here are emissions o radioaciveparicles.

(a) (i) How much neurons are here in one aom o radium-228?_______________________________________________________________________ [ 1 mark ]

(ii) Name he ypes and he number o radioacive paricles emited._______________________________________________________________________ [2 marks]

(iii) Wrie equaions or he nucleus decay in (a)(ii)[3 marks]

(b) Explain he meaning o hal lie in erms o radium-228 having 1620 years_______________________________________________________________________ [2 marks]

(c) Bismuh-214 and bismuh-216 are isoopes o bismuh. Sae he similariies and he dierences beween hese nuclei._______________________________________________________________________ [3 marks]

(d) Sae one saey measured o keep radium-226 in he school laboraory_______________________________________________________________________ [ 1 mark ]

Ra

228

88 Bi21683



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(c) Figure below shows a elescope.

Section B[ 20 marks ]

Answer anyone quesion rom his secion.

9. Figure 10.1 and 10.2 shows he ligh rays rom wo idenical objecs passing hrough a glass convex lens, J and an ice convexlens, K. Te wo lenses have he same cur vaure. Te objecs are placed a he same disance rom he lens. Boh he lensesproducevirual images. F is he ocal poin or each lens. Te reracive index o glass is 1.5 while he reracive index o ice is

1.31.

(a) (i) Dene he power o a lens. [ 1 mark ]

(ii) Using gure 10.1 and 10.2, compare he reracive index, he ocal lengh o he lenses and he image ormedby he wo lenses. Make a deducion regarding he relaionship o he reracive index o he ocal lengh andalso o he power o he lens.

[5 marks]

(b) Explain why a convex lens can bu a concave lens canno burn a piece o paper when each is placed wih one side acinghe sun. [4 marks]

Give some suggesion on how o design an asronomical elescope which can orm sharp, brigh images wih highlinear magnicaion.Using your knowledge on lenses and properies o opics, explain he suggesions based on he ollowing aspecs.i) ypes o lenses usedii) Magnicaion o he imageiii) Ways o increase he brighness o he imageiv) Ways o increase he sharpness o he image

v) Lengh o he elescope [10 marks]



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(b) Diagram below shows a moving coil galvanomeer.

Te scale o he galvanomeer is no linear and he deecion is no sensiive. You inend o improve i so ha is scale canbecome linear and able o deec small currens. Your modicaion should base on he ollowing aspec(i) Te shape and he srengh on he magne(ii) Te pair o so spring

(iii) Te wire coil(iv) Te way where he galvanomeer can become an ammeer[10 marks]

(a) (i) Sae he meaning o elecromagneic inducion[ 1 mark ]

(ii) Observe diagram (a) and diagram (b), compare he heigh where magne dropped, he angle and he direcion ohe galvanomeer poiner deec. Relae he heigh where he magne dropped wih he angle o deecion.

Wha is he relaionship beween he magneic pole and he direcion o induced curren produced?[5 marks]

10. Diagram (a) shows a bar magne wih Norh Pole released rom a heigh, h. Diagram (b) shows a bar magne wih Souh Polereleased rom heigh H. Boh magnes dropped hrough he solenoid wih same number o urns and induced curren produced.



15/36


12 V, 10 W

Electric bell240 V,a.c

(c) Diagram below shows an elecric bell 12 V, 10 W is conneced o he oupu o a ransormer. Te efciency o heransormer is 80%.

Calculae(i) he curren in he elecric bell(ii) he curren in he primary coil [4 marks]



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Section C[ 20 marks ]

Answer anyone quesion rom his secion

11. (a) Wha is mean by emperaure? [ 1 mark ]

(b) Explain how a new hermomeer can be calibraed [4 marks]

(c)

Diagram above shows a cooling sysem o a moorcycle engine. You as a mechanical engineer is given a ask osudy characerisics o meal shown in he able 11.2 o be used as efecive ns in he cooling sysem o hemoorcycle engine.

(i) Sae suiable characerisics o meal ha is used as ns in he moorcycle engine.

(ii) Deermine he mos suiable meal ha can be used as ns. Give reasons or your choice.[10 marks]

(d) (i) A piece o n in he engine o a moorcycle wih a mass o 0.5 kg made rom meal R. I heemperaure increased by 10oC in one hour, how much o energy being absorbed by he n.

[3 marks]

(ii) I 10 ns idenical o he one in (d)(i) are used in he moorcycle engine, how much energy islos by he engine in one hour?

[2 marks]



17/36


12. Figure 12.1 and 12.2 show the water wavelengths at two diferent areas o the sea.

(a) Wha is mean by wavelengh? [1 mark]

(b) Based on Figure 12.1 and 12.2, compare he dephs o waer, wavelenghs o waer and he speeds ohe waves. Relaes he deph o he sea, he wavelengh and he speed o he waves o deduce a relevanphysics concep.

[5 marks]

(c) Te sound o a radio is normally louder a nigh as compared o ha during he day alhough hevolume o he radio is xed. Explain why.

[4 marks]

(d) able below shows our waves which can be used o deermine he deph o he sea.

Explain he suiabiliy o each characerisic o he wave o be used o deermine he deph o he sea.Choose he mos suiable wave and give reasons or your choice.

[10 marks]



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Section A[28 marks]

Answer all quesions

1 A sudens carries ou an experimen o invesigae he relaionship beween heigh o he rack, h andacceleraion, a o he rolley which moves down rom a same poin o he smooh rack. Te arrangemen ohe apparaus is shown in Figure 1.1 .

A piece o icker is xed o he rolley which is placed on he rack wih heigh, h = 10.0 cm. Te rolley is henreleased and moves down wih an acceleraion o a.



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A secion o icker ape which represens he movemen o he rolley is aken. Te acual size o he icker ape isshown in Figure 1.2 .

Te above procedure is repeaed or o h equals o 15.0 cm, 20.0 cm, 25.0 cm and 30.0 cm. Te correspondingicker apes are shown in Figures 1.3, 1.4, 1.5 and 1.6 .

(a) For he experimen described, ideniy:(i) he manipulaed variable

__________________________________________________________________ [1 mark](ii) he responding variable

__________________________________________________________________ [1 mark](iii) he xed variable

__________________________________________________________________ [1 mark]

(b) Based on Figures 1.2, 1.3, 1.4, 1.5 and 1.6 :(i) measure s

1and s

2. Calculae he value oa by using he ormula:

Record all he value o l in he spaces provided [3 marks]

(ii) abulae your resuls or s

1, s

2and a or all values o h, in he space below.

[4 marks]

(c) On he graph paper, plo a graph o a agains h . [5 marks]

(d) Based on your graph, sae he relaionship beween a and h . __________________________________________________________________ [1 mark]

002.0

12ss

a

=



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Graphofaagainsth



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2 A suden carries ou an experimen o deermine he elecromoive orce (e.m..) , E and he inernalresisance, r o a dry cell. Te suden used ve resisors wih diferen values o resisance, R and xed hee.m.. , E o he cell.

Te graph o he reciprocal o curren, agains resisance, R is shown below:I

1 I

1

/A-1



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(a) Based on he graph,

(i) sae he relaionship beween and R

_____________________________________________________________ [ 1 mark ]

I

1

(ii) deermine he value o he when R= 0

= ____________________________________________________________ [2 marks]

(iii) Te value o , when he R= 0 is given by he ormula = 0.4 r, where r is he inernal

resisance o he cell.

[2 marks]

(b) Te elecromoive orce,E o he cell is given by he ormula , where m is he gradien o he graph.

(i) Calculae he gradien,m o he graph. Show on he graph how you calculae m .

m = _________________ [3 marks]

(ii) Deermine he value oE .

E = _________________ [2 marks]

(c) Sae two precauions o be aken in his experimen. ________________________________________________________________________

________________________________________________________________________ [2 marks]

I

1 I

1

I

1 I

1

Em

1=



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Section B[12 marks]

Answer anyone quesion rom his secion.

3 A suden was diving while on vacaion near an island. A he posiion shown in Figure 3(a) , he did no eel any paininside his ears. However, when he was a he posiion shown in Figure 3(b) , he began o eel a sligh pain in his ears.

Figure(a) Figure(b)

Based on he siuaion above;

(a) Sae an inerence ha could be made. [1 mark]

(b) Sae a suiable hypohesis or an invesigaion. [1 mark]

(c) Wih he use o hisle unnel, U-shaped ube and oher apparaus, describe an experimen ramework o es yourhypohesis. In your descripion clearly sae he ollowing:

(i) Aim o he experimen.(ii) Variables in he experimen.

(iii) Lis o apparaus and maerials.(iv) Arrangemen o he apparaus.(v) Te procedure o he experimen which include he mehod o conrolling he manipulaed variable

and he mehod o measuring he responding variable.(vi) Way you would abulae he daa.(vii) Way you would analysis he daa.

[10 marks]



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4 Figures 4(a) and 4(b) show wo cranes ranserring diferen loads o scrapped irons. Te solenoid used in he cranein Figure 4(a) has ewer coils han he crane in Figure 4(b). Boh using he same magniude o curren supply ooperae.

Based on he inormaion and observaion above,

(a) Sae one suiable inerence. [1 mark]

(b) Sae one appropriae hypohesis ha could be invesigaed. [1 mark]

(c) Wih he use o apparaus such as insulaed wires, bateries, iron pins and oher apparaus, describe anexperimen o invesigae he hypohesis saed in 4 (b) .

In you descripion, sae clearly he ollowing:

(i) Te aim o he experimen.(ii) Te variables in he experimen.(iii) Te lis o apparaus and maerials.(iv) Te arrangemen o he apparaus.(v) Te procedure used in he experimen. Describe how o conrol and measure he manipulaed

variables and how o measure he responding variables.

(vi) Te procedure o he experimen.(vii) Te way you would abulae he daa.(viii) Te way you would analysis he daa.

[10 marks]

END OF QUESIONS PAPER



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SOALAN ULANGKJI SPM 2012

Physics

Jawapan

Physics Paper 1



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Physics Paper 2



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Buoyant force

Weight



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Physics Paper 3



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Documents

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