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Physics
Analysis[4531/1][4531/2][4531/3]
OPICSPAPER 1
PAPER 2 PAPER 3Secion A Secion B Secion C Secion A Secion B
06 07 08 09 10 06 07 08 09 10 06 07 08 09 10 06 07 08 09 10 06 07 08 09 10 06 07 08 09 10Inroduciono Physics 3 3 2 3 3 1 1 1 1Forces andMoion 7 8 9 8 7 3 3 1 1 1 1 1 1 1 1Forces andPressure 8 6 5 7 8 1 1 1 1 1 1 1 1Hea 5 4 3 4 5 1 1 1 1 1 1 1 1 1 1 1Ligh 5 5 5 5 5 1 1 1 1 1 1 1 1 1 1
Waves 7 6 5 7 5 1 1 1 2 1 1Elecriciy 5 5 3 4 5 2 1 1 1 1 1 1 1Elecro-magneism 3 3 4 5 5 1 1 1 1 1 1
Elecronics 4 3 4 4 3 1 1 1 1 1 1Radioaciviy 3 3 3 3 3 1 1 1 1 1 1OAL 40 40 40 40 40 8 8 9 8 8 2 2 2 2 2 2 3 2 2 2 2 2 2 2 2 2 1 2 2 2
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Physics Paper 1 [4531/1]
Each quesion is ollowed by eiher hree, our or five opions. Choose he bes opion or each quesion and hen blacken he correcspace on he answer shee.
4 Which o he ollowing siuaions experiences normalreacion?
A B
C D
5 Te crumple zone a he ron o a vehicle is used o increasehe ime o impac i he vehicle involved in a collision.
Te increase in he ime o impac will reduce
A ImpulseB impulsive orceC momenumD final velociy
6 Diagram 6 shows he orces ha aced on a parachue.
Which o he ollowing expressions is rue i he parachuealls a consan speed?
A U + G > WB U + W = G
C U + W < GD U + G = W
1 Diagram 1 shows a vernier caliper.
Wha is X.
A Inner CaliperB Ouer CaliperC Inside Jaws
D Ouside Jaws
2 Diagram 2 shows hree posiions o he observer eye o readhe heigh o a suden.
Which posiion gives he reading wihou parallax error?
3 able 1 shows he daa recorded by a suden o invesigaehe relaionship beween mass, m and period o oscillaion, .
Mass,m/kg
ime aken or10 oscillaions,
/ s
Average / s
Period, = / s
1 7.1 7.7 7.4 7.4 0.742 9.3 9.5 9.7 9.5 0.95
3 11.0 11.3 10.7 11.0 1.10
Which o he ollowing saemens is no rue?
A ime aken o make 10 oscillaions is aken because heperiod is oo small.
B Te accuracy o reading can be increased by reducing hezero error o he sop wach.
C Te misake in couning he number can be reduced by akena ew readings.
D ime aken or 10 oscillaions is he manipulaed variable.
Diagram 1
X
A
B
C
Diagram 6
Up hrus, U Drag, G
Weigh, W
t
10
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7 Diagram 7 shows a horizonal orce, F, is applied on a load oweigh, W, ied on a verical wall by a srings K and M.
K
L
M
Load
I he objec in sae o equilibrium and he ension in sringK is , which riangle o orces is correc?
A B
C D
8 Diagram 8 shows rolleys beore and afer collisions. Allrolleys are idenical move wih same iniial velociy andcollide wih saionary rolleys.
Which rolleys move wih highes common velociy afer
collision i he collisions are inelasic?
A
B
C
D
9 Diagram 9 shows a saionary rolley a K rolls down on asmooh curved surace.
Which o he ollowing saemen is rue abou he moion ohe rolley?
A Kineic energy a M is zeroB Velociy is increasing rom L o MC oal energy a K and N are sameD Poenial energy is increasing rom M o N
10 Diagram 10 shows an objec is moving on an inclinedsmooh curved surace. Te objec has a velociy o 10.0 ms-1a P and emporarily a res a Q.
PR
Q
h
Smooth surface
U=10.0 ms-1
Wha is he verical heigh o h rom Q o R?
A 2.5 mB 5.0 mC 10.0 m
D 25.0 mE 50.0 m
11 Diagram 11 shows a manomeer is conneced o a conainero gas. ekanan amosera adalah 75 cm Hg.
I he amospheric pressure is 75 cm Hg, wha is he pressureo gas in he conainer?
A 50 cm HgB 60 cm HgC 75 cm HgD 85 cm HgE 90 cm Hg
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P
Q
12 Which o he ollowing will no reduce he pressure?
A B
C D
13 Diagram 13 shows a simple baromeer wih liquid X.
liquid
h
Te heigh hinfluenced by he ollowing acors excep
A volume o he liquidB graviaional acceleraionC amospheric pressureD densiy o he liquid
14 able 14 shows our ypes o soluion P, Q, R and S which dono mixed.
Soluion Densiy (kg m-3)
P 9.20 x 102
Q 7.90 x 102
R 1.27 x 103
S 7.03 x 103
Which o he ollowing layers o he soluion is correc i hey
are in mixed in a beaker?
A B
C D
15 Diagram 15 shows a hidraulic sysem wih he cross-secionalarea o pison B is wice he cross-secional area o pison A.
Piston A Piston B
Q
YX
P
Which o he ollowing saemens is correc?
A Pressure a X is same as amospheric pressureB Pressure a X is hal o pressure a YC Mass o objec P is hal he mass o QD Weigh o objec P is same as weigh o Q
16 Which o he ollowing siuaions has he highes pressure orapped air by he mercury column?
Air
A B
AB
C D
17 wo un idenical ligh springs, P and Q, wih iniial lenghs5.0 cm conneced in series and hung by he load 300 g a heend o spring Q.
17 cm
23 cm
300 g
Wha is he oal lengh o springs P and Q i he load 300 g isreplaced by 500 g?
A 40 cmB 45 cmC 50 cmD 55 cmE 60 cm
Q
P
R
S
P
Q
R
S
Q
P
S
R
S
R
P
Q
Air
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18 Diagram 18 shows hree idenical blocks hung by he springbalance in air, liquid R and liquid S correspondingly.
Which o he ollowing saemens is rue abou he abovesiuaions?
A Weigh o he block is lowes in liquid RB Volume o liquid R displacemen mos by he blockC Densiy o liquid R is higher han he densiy o liquid SD Buoyan orce experienced by he block in liquid S is highes
19 Graph shows he relaionship beween pressure andemperaure o rapped air.
Wha is he value o M ?
A - 197B - 237C - 273D - 323
20 Diagram 20 shows a meal block A a emperaure 60
O
C inconac wih meal block B a emperaure 30OC.
Afer a ew minues he meals A and B reached hermalequilibrium which means
A he emperaure o meal A is higher han B.B he amoun o hea in meal A and B are same.C he rae hea flow rom meal A o B and B o A are same.D he rae hea los rom A and B o he surrounding are same.
21 Diagram 21 shows a hermomeer in a mixure o ice and waer.
Te emperaure remains a 0OC because
A he ice molecules which mel diffuse ino waer molecules.B ice and waer reached hermal equilibrium.C he glass bulb o he hermomeer placed near ice.D he hea is no used o increase he kineic energy o waer
molecule.
22 Diagram 22 shows a mercury hermomeer. Mercury bulb
Mercury bulb
Which o he ollowing seps can be aken o increase hesensiiviy o he hermomeer?
A Reduce he diameer o he capillary ube and increase hesize o mercury bulb.
B Increase he diameer o he capillary ube and reduce hesize o mercury bulb.
C Reduce he diameer o he capillary ube and reduce he sizeo mercury bulb.
D Increase he diameer o he capillary ube and increase hesize o mercury bulb.
23 500 g o waer a 70OC is poured ino M g o waer a 10 OC.Te final emperaure o he mixure is 50OC.
Wha is he value o M?
A 167 gB 250 gC 750 gD 1000 gE 1500 g
Meal AMeal B
liquidR
liquidS
emperaure/OC
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24 Diagram 24 shows a fish in an aquarium look closer o hesurace by he observer above he waer.
Te phenomenon o ligh involved is
A reflecionB reracionC diffracionD oal inernal reflecion
25 Which o he ollowing ray diagram shows he correc pah oligh ray?
A B
C D
26 Which o he ollowing arrangemens o lenses produce hehighes magnificaion o a simple asronomical elescope anormal adjusmen?
A
B
C
D
27 Diagram 27 shows a candle in ron o a concave mirror.
Te image o he candle isA virualB uprigh
C laerally inveredD bigger han he objec
28 Diagram 28 shows a slide projecor on a able. Te disanceo he screen rom he lens is 2.5 m and he slide rom helens is 20 cm.
Wha is he ocal lengh o he projecors lens?
A D
B E
C
image
objec
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29 Sound rom he disan objec can be heard clearer a nighcompare during day ime.
Te phenomenon o waves involved is
A reracionB reflecionC diffracionD inererence
30 Diagram 30 shows a ship ransmi an ulrasonic wave o heseabed.
ransmiter Receiver
I he sound waves received 2.0 s afer ransmited and hespeed is 640 ms-1, wha is he deph o he ocean?
A 320 mB 640 mC 960 mD 1280 m
E 2560 m
31 Diagram 31 shows he side view o ripple anks P, Q and Rwih waer and differen shapes o ransparen glass plaes.Plane waves produced by he vibraors wih he samerequencies. Te paterns o wave rons are observed on hescreen using he sroboscope.
Ripple ank P Ripple ank Q Ripple ank R
Which o he ollowing are observed on he screens romripple anks P, Q and R?
Ripple ank P Ripple ank Q Ripple ank R
A
B
C
D
32 Diagram 32 shows a sreched slinky spring on a horizonalplane wih one end atached o a verical wall. A pulse o
waves given on he oher end o he spring produced a serieso compression and rareacion regions.
Te wavelengh can be measure rom
A P o RB P o SC P o Q D P o
33 Diagram 33 shows he specrum o elecromagneic waves.
Radio waves Microwaves Ulra-viole Visible ligh
Inra red X-ray Gamma ray
Which o he ollowing saemen is rue?
A All elecromagneic waves can be defleced by magneic field.B All elecromagneic waves can be defleced by elecric field.C All elecromagneic waves are ransverse waves.
D All elecromagneic waves ravelled wih he same speed inglass.
34 Diagram 34 shows an inererence patern o ligh waves inYoungs double slis experimen.
Which o he ollowing will caused he disance beween woconsecuive ringes increases?
A Reduce he disance beween ligh source and he doubleslis.
B Reduce he disance beween double slis and he screen.C Reduce he disance beween wo slis o double slis.D Increase he disance beween wo slis o double slis.
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35 Which o he ollowing graph represens he correcrelaionship beween wavelengh, , and requency, ?
A B
C D
36 Diagram 36 shows he srucure o elecric moor.Which o he ollowing labels represens permanen magne?
37 Diagram 37 shows a dry cell is conneced o wo bulbs and aswich.
Which o he ollowing circuis represens he aboveconnecion?
A B
C D
38 Which o he ollowing graphs represens he change opoenial difference across a resisor which increases isresisance when curren flow increases?
A B
C D
39 Diagram 39 shows he connecion o hree idenical bulbs L1,
L2and L
3labeled 12V, 30W.
Wha is he value o curren rom X i he poenial differenceacross XY is 12 V?
A 0.4 AB 2.5 AC 7.5 AD 12 AE 36 A
40 Diagram 40 shows our ploting compasses placed close o asolenoid around an iron core.
Which o he ollowing shows he correc direcion o heneedle o he compasses?
A B
C D
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41 Diagram 41 shows a conducing wire conneced o agalvanomeer in beween wo magne.
Magne
N
S
Wha will happen when he wire move upwards?
A Induced curren flow in wire rom B o A.B Te wire will be magneise.C Te needle o galvanomeer will no deflec.
D Te needle o galvanomeer deflec and hen back o iniialposiion.
42 Diagram 42 shows hree idenical bulbs conneced o a drycell and a swich. Te bulb lighs up wih normal brighness ii is conneced individually o he dry cell.
Which o he ollowing shows he condiion o he bulbswhen he swiches S1, S2 and S3 are closed?
Bulb M1 Bulb M
2 Bulb M
3
A Dimmed Dimmed NormalB Dimmed Dimmed FuseC Normal Normal FuseD Normal Normal Dimmed
43 Graph 43 shows variaion o alernaing curren flowshrough a resisor, 5.
I/A 4
/s
-4
Wha is he value o power dissipaed as hea in he resisor?
A 20 W D 80 WB 40 W E 100 WC 50 W
44 Which o he ollowing pairs are correc?
Symbol Elecronic Device
A Diode
B Dry cell
C PNP ransisor
D Variable Capacior
45 Diagram 45 shows a circui o fire alarm. Which componen works as a sensor o hea?
46 Diagram 46 shows he ruh able or a combinaion o a ew
logic gaes.
Inpu OutputA B X0011
0101
1110
Which o he ollowing combinaion o logic gaes give heabove oupu X?
A
B
C
D
G
A
B
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47 Diagram 47 shows he shape o he signal displayed onhe screen when Y-inpu o a cahode-ray-oscilloscope isconneced o a dynamo o a bicycle.
Which o he ollowing saemens is correc?
A Te peak volage is 8.0 V
B Te requency is 25 HzC A ligh spo produced when ime-base is offD Te ampliude o he signal reduced when Y-muliplier
change o 1.0V / division
48 Graph 48 shows he radioacive decay o an isoope. Which secions represens he hal-lie o he radioisoope?
49 Te equaion below represens he radioacive decay o X
wih he emission o alpha paricle and daugher nucleus Y. X Y +
Which o he ollowing is rue abou nucleus Y?
A Y has 2 proons less han X.B Y has 4 neurons less han X.C Y has 4 proons less han X.D Y has 2 elecrons less han X.
50 Te iniial aciviy o283
214 Bi is 32 couns per second. Afer60 minues he aciviy drops o 4 couns per second.
Wha is he hal-lie o 283214
Bi?A 10 minues D 30 minuesB 15 minues E 40 minuesC 20 minues
END OF QUESIONS PAPER
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Physics Paper 2 [4531/2]
Secion A[60 marks]
Answer all quesions in his secion.
1 Figure 1 shows a spring on a smooh horizonal surace being compressed by a seel ball oward a wall.
Figure 1
(a) (i) Sae he ype o energy sored in he compressed spring. ____________________________________________________________________ [1 mark]
(ii) Sae he relaionship beween he compressed orce and he energy sored in he spring. ____________________________________________________________________ [1 mark]
(b) Te compressed orce is released and he ball move wih cerain velociy.Sae he changes o magniude o he velociy i
(i) he siffer spring is used (he ball released rom he same poin) ____________________________________________________________________ [1 mark]
(ii) he ball wih bigger mass is used ____________________________________________________________________ [1 mark]
2 Figure 2 shows a plane wave o waer wave propagaes owards wo plane barriers.
(a) Draw he patern o he wave ha passed hrough he opening. [2 marks]
(b) Name he phenomenon o wave occur in (a).
____________________________________________________________________ [1 mark]
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(c) I he velociy o he wave beore he opening is 4 cm s-1, calculae is requency afer he opening.
[2 marks]
3 Figure 3.1 shows he componen o a cahode-ray-oscilloscope.
FIGURE 3.1
(a) Wha is he meaning o cathoderay?
____________________________________________________________________ [1 mark]
(b) Sae he uncion o he filamen in he cahode-ray-oscilloscope. ____________________________________________________________________ [1 mark]
(c) I he poenial difference beween anode and cahode is 5 kV, calculae he speed o he cahode ray. [Mass o an elecron, me = 9 x 10-31kg] [Charge o one elecron, e =1.6 x 10-19C]
[3 marks]
(d) Sae one advanage o using he cahode-ray-oscilloscope insead o he volmeer o measure he poenial difference.________________________________________________________________________________________________________________________________________ [1 mark]
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4. Figure 4.1 shows a virual image o flower as seen hrough a magniying glass.
Figure 4.1
(a) (i) Wha is he meaning o virual image. ____________________________________________________________________ [1 mark]
(ii) Sae he phenomena o ligh involved in he ormaion o he image. ____________________________________________________________________ [1 mark]
(b) (i) Draw he ray diagram o show he ormaion o image in Figure 4.2 below. [2 marks]
FIGURE 4.2
(ii) Sae one characerisic o he image oher han virual image. ____________________________________________________________________ [1 mark]
(c) Calculae he image disance, v, i he objec disance and ocal lens are 10 cm and 20 cm respecively.
[2 marks]
Objec
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5 wo idenical cylinders filled wih gas o he same mass are compressed by 2 kg loads. Te cylinder in Figure 5.1 is mainained aroom emperaure and he cylinder in Figure 5.2 is heaed up o a cerain emperaure.
FIGURE 5.1 FIGURE 5.2 (a) Using Figure 5.1 and Figure 5.2, compare (i) h
1 and h
2
____________________________________________________________________
(ii) he emperaure o gas in cylinders in Figure 5.1 and Figure 5.2 ____________________________________________________________________ [2 marks]
(b) Sae he relaionship beween emperaure and heigh o pison in he cylinder.Explain your answer.
________________________________________________________________________________________________________________________________________
____________________________________________________________________ [3 marks]
(c) Name he gas law involved. ____________________________________________________________________ [1 mark]
(d) Wha will happen o heigh o he pison, h1, in Figure 5.1 i he mass o he load is reduced?
Give one reason or your answer. ____________________________________________________________________ [2 marks]
6 Figure 6.1 and Figure 6.2 show he graphs o radioacive decay o radioisoopes P and Q.
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(a) Wha is he meaning o radioisoope? ____________________________________________________________________
____________________________________________________________________ [1 mark]
(b) Using Diagram 6.1 and Diagram 6.2, sae wo observaions or he aciviy radioacives P and Q. ____________________________________________________________________
____________________________________________________________________ [2 marks]
(c) Wha is he ime aken or he aciviy o he subsances P and Q o reduce o hal o heir iniial aciviy. ____________________________________________________________________
____________________________________________________________________ [2 marks]
(d) Sae he relaionship beween he aciviy o be halved and is ime inerval in (c).Name ha ime inerval.
________________________________________________________________________________________________________________________________________ [2 marks]
(e) Wha is he aciviy o he subsance Q afer 3 s?
____________________________________________________________________ [1 mark]
7 Diagram 7.1 shows a hydraulic pump used o lif up a car in a workshop.
FIGURE 7.1
(a) (i) Name he physics principle used in hydraulic pump.____________________________________________________________________ [1 mark]
(ii) Name one imporan characerisic o he fluid used. ____________________________________________________________________ [1 mark]
(b) Te pressure o compressed air on he surace o fluid is 5000 N m-2and cross secional area o he pison is 2 m2.
(i) Wha is he pressure o fluid in he cylinder? ____________________________________________________________________ [1 mark]
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(ii) Calculae he maximum mass ha can be lifed by he pison.
[3 marks]
(iii) Wha is he effec o he posiion o he pison i he car is replaced by a lorry wih bigger mass? ____________________________________________________________________ [1 mark]
(c) Wha are he changes could be done o he pison and he cylinder so ha he heavier load can be lifed.
____________________________________________________________________________________________________________________________________________________________________________________________________________ [2 marks]
(d) Name anoher applicaion ha uses physics principle in (a)(i).
____________________________________________________________________ [1 mark]
8 Diagram 8.1 shows a ransisor circui used o deec he emperaure o liquid.Te bulb will lighs up he base volage V
Ba leas 2 V.
FIGURE 8.1
(a) In Figure 8.1 above, complee he symbol o he ransisor which is suiable or he circui o uncion.Name he ype o he ransisor.
____________________________________________________________________
____________________________________________________________________ [2 marks]
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(b) I he bulb lighs up
(i) wha is maximum volage across resisance R1?
____________________________________________________________________ [1 mark]
(ii) calculae he resisance o he hermisor when he volage across R1is maximum.
[2 marks]
(c) A suden rying o make changes o he circui in Figure 8.1 by exchanging he posiion he resisor R1and hermisor.
Te bulb lighs up when he resisance o hermisor is 3500 a boiling poin o he liquid. able 8.1 shows hree resisors S, and U o change wih resisor R
1.
Resisor Resisance /
S 400
550
U 800
able 8.1
(i) Calculae he base volage VBor each o he above resisors.
[4 marks]
(ii) Using your answer in (c)(i), sugges he mos suiable resisor o be used.Give one reason or your answer.
________________________________________________________________________________________________________________________________________ [2 marks]
(iii) Why he bulb lighs up? ____________________________________________________________________ [1 mark]
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Secion B[ 20 marks ]
Answer any one quesion rom his secion.
9 Figure 9.1 shows emperaure agains energy graph or heaed solid oxyge. Figure 9.2 shows emperaure agains energy graph or ice heaed wih heaing equipmen.
FIGURE 9.1 FIGURE 9.2
(a) Wha is meaning o emperaure? [1 mark]
(b) Using Diagram 1.1 and Diagram 1.2, compare he change in emperaure wih heaing energy or oxygen and ice. Sae he relaionship beween hea energy supplied by he heaer and he emperaure a meling poin. [ 5 marks]
(c) Explain he mehode o cool down a cup o coffee aser. [4 marks]
(d) Diagram 1.3 shows a box wih a cover o be used as a rerigeraor.
FIGURE 1.3
Using conceps o physics, explain how he box can be modified o be a rerIgeraor.Your explainaion should be discussed in he ollowing aspecs;
(i) Te shape and he maerial o he pipe or he flow o he rerigeran or cooling liquid. (ii) Te ype o cooling liquid used (iii) Saey eaures.
(iv) Te posiion o cooling comparmen. [10 marks]
energy/joule
liquid
solid solid
liquid
energy/joule
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10. Figure 10.1 (a) shows a pendulum made rom a conducing wire, swinging beween wo magnes.Te pendulum displaced a a lower level.
Figure 10.1 (b) shows he idenical pendulum sysem is displaced a a higher level. Figure 10.2 (a) and Figure 10.2 (b) show a simple generaor and is anchore spin beween wo magnes wih differen speed
FIGURE 10.1(a) FIGURE 10.1 (b)
Slow
FIGURE 10.2 (a) FIGURE 10.2 (b)
(a) Wha is mean by elecromagne induced? [1 mark]
(b) Using figure 9.1 and 9.2 compare he brighness o bulbs wih heir relaive movemens o he anchorand level o pendulum being displaced.
Relae he speed o he anchor and he level displaced o a pendulum, magneic field, hence deducea relevan physics concep. [5 marks]
(c) (i) Name he ype o curren flows hrough he bulb in figure 9.1. (ii) Skech he graph o an oupu curren deduced rom he oscillaion o he simple pendulum.
On he same graph, skech and label he graph o an oupu curren i he speed o he
oscillaion o he simple pendulum increased. [4 marks]
(d) Using he labelled diagram, sugges how o modiy he generaor above ino alernaing curren generaorwhich has high efficiency. [10 marks]
Fast
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Secion C[ 20 marks ]
Answer any one quesion rom his secion
11 (a) Endoscope is an insrumen used by docor o observe he inernal injury o a paien. Endoscope is made romopical fibre as shown in Diagram 11.1. Te ligh rom he inernal organ ransmited hrough he opical fibre
by muliple oal inernal reflecions unil i reached he video camera.
Diagram 11.1
able 11.1 shows he characerisics o glass o be used as he opical fibre.
Characerisic/Maerial Reracive Index Siness Srengh Criical angle, c/ oV 1.3 Low Moderae 50.3W 2.4 Low High 24.6X 2.5 High High 23.6Y 1.8 Moderae Moderae 33.8Z 1.7 Low High 36.0
(i) Wha is he meaning o oal inernal reflecion? [1 mark]
(ii) You are asked o sudy he characerisics o he maerials in able 11.1 o be used as he opical fibre in endoscope. Explain he suiabiliy each characerisic in able 11.1 and choose he mos suiable maerial.
Give reasons or your choice. [10 marks]
(b) When a ray o ligh propagaes rom air o a diamond, he diamond looks sparkling. Reracive index o diamond is 2.43.
(i) Calculae he criical angle o he diamond. [2 marks]
(ii) Explain how he diamond look sparkling afer ligh ray eners hrough is surace. [3 marks]
(iii) Wha changes o he sparkling o he diamond when i is immersed in a beaker o waer.Give reason or your answer. [2 marks]
(iv) Can a piece o glass give he same sparkling effec when i is cu similar o he diamond.Explain your answer. [2 marks]
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12 Diagram 12.1 shows a use used in elecrical appliances. Te use is used o preven he appliancerom spoil when excess curren flow.
Diagram 12.1
able 12.1 shows he characerisics o meal used as he wire in use.
MealResisance
/ Meling poin
/ OCSpecific hea capaciy
/ Jkg -1 0C-1Diameer
P 0.03 700 900 BigQ 0.97 1200 500 SmallR 0.22 327 128 SmallS 0.18 1083 387 Big
(a ) (i) Wha is mean by elecric curren? [ 1 mark]
(ii) Explain how use works. [2 marks]
(iii) You are asked o sudy he characerisics o he meal in able 12.1 o be used as wire in use. Explain he suiabiliy o he characerisics in able 12.1 and choose he mos suiable wire.
Give reasons or your choice. [10 marks]
(b) An elecric iron labelled 1000 W, 240 V is used or 2 hours. Calculae
(i) Te amoun o elecrical energy used.
(ii) Te curren flow in he elecric iron and hence sugges he suiable use. [5 marks]
(c) Te wire o he elecrical appliances consiss o hree wires; Live, Neural and Earh wires.o which wire he use is conneced and explain your answer. [2 marks]
END OF QUESIONS PAPER
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Secion A[28 marks]
Answer all quesions
1 A suden carry ou an experimen o invesigae he relaionship beween he lengh o consanan wire, l and he resisance, R. Te arrangemen o he apparaus are as shown in Figure 1.1.
Constantan wire
A
V
Figure1.1
Using he consanan wire o lengh, l = 20.0 cm, he swich is closed and he rheosa is adjused so ha he reading o heammeer, I = 0.5 A. Te reading o he volmeer is as shown in Figure 1.2.
Te seps above are repeaed using lenghs, l, = 40.0 cm, 60.0 cm, 80.0 cm and 100.0 cm. Teir corresponding readings ovolmeer are as shown in Figures 1.3, 1.4, 1.5 and 1.6.
Te resisance o he consanan wires are calculaed using he ormula; R = V
I
FIGURE 1.2 (l= 20.0 cm) FIGURE 1.3 (l= 40.0 cm) FIGURE 1.4 (l= 60.0 cm)
FIGURE 1.5 (l= 80.0 cm) FIGURE 1.6 (l= 100.0 cm)
Physics Paper 3 [4531/3]
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(a) From he inormaions menioned, sae;
(i) manipulaed variable, ____________________________________________________________________ [1 mark]
(ii) responding variable, ____________________________________________________________________ [1 mark]
(iii) fixed variable. ____________________________________________________________________ [1 mark]
(b) On he Figures 1.2, 1.3, 1.4, 1.5 and 1.6, wrie he readings o he volmeer in he space provided when helengh, lare 20.0 cm, 40.0 cm, 60.0 cm, 80.0 cm and 100.0 cm respecively.
abulae he daa or l, V and R in he space below.
[7 marks]
(c) Plo he graph o R agains lon he nex page. [5 marks]
(d) Using he graph in (c), sae he relaionship beween Rand l. ____________________________________________________________________ [1 mark]
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(b) Using your answer in (a) (iv) and he equaion =Pt , calculae he specific hea capaciy, co he copper block.mc
[ 3 marks]
(c) Sae one precauion in his experimen.____________________________________________________________________ [ 1mark ]
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Secion B[12 marks]
Answer any one quesion rom his secion.
3. Figure 3.1 shows an elecromagne o a crane conneced o a power supply o lif up scrapped iron in iron mill. Figure 3.2 shows he same crane where he elecromagne is conneced o higher power supply.
FIGURE 3.1 FIGURE 3.2
Based on he inormaion and observaion above:
(a) Sae one suiable inerence. [1 mark]
(b) Sae one suiable hypohesis. [1 mark]
(c) Wih he use o apparaus such as sof iron core, insulaed copper wire and oher apparaus,describe an experimen ramework o invesigae he hypohesis saed in 3(b).
In your descripion, sae clearly 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 variableand he mehod o measuring he responding variable.
(vi) Te way you would abulae he daa.
(vii) Te way you would analyse he daa. [10 marks]
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4. Figure 4.1 shows a swing wih a baby oscillaes verically. I is observed ha he swing oscillae sloweri he mass o he baby is bigger.
FIGURE 4.1
Based on he inormaion and observaion above:
(a) Sae one suiable inerence. [1 mark]
(b) Sae one suiable hypohesis. [1 mark]
(c) Wih he use o apparaus such ashelical spring, sloted weigh and oher apparaus, describe an experimenramework o invesigae he hypohesis saed in 3(b).
In your descripion, sae clearly he ollowing;
(viii) Aim o he experimen.
(ix) Variables in he experimen.
(x) Lis o apparaus and maerials.
(xi) Arrangemen o he apparaus.
(xii) Te procedure o he experimen which include he mehod o conrolling he manipulaedvariable and he mehod o measuring he responding variable.
(xiii) Te way you would abulae he daa.
(xiv) Te way you would analyse he daa. [10 marks]
END OF QUESIONS PAPER
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Physics
Jawapan
Physics Paper 1
No Ans No Ans No Ans No Ans No Ans
1 C 11 E 21 B 31 B 41 A
2 B 12 C 22 A 32 A 42 C
3 D 13 A 23 B 33 C 43 B
4 C 14 D 24 B 34 C 44 B5 B 15 C 25 C 35 C 45 B
6 D 16 A 26 C 36 B 46 D
7 A 17 E 27 D 37 B 47 B
8 D 18 C 28 D 38 B 48 B
9 C 19 C 29 A 39 B 49 A
10 B 20 C 30 B 40 D 50 C
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Physics Paper 2
No Mark AnswerQuesion 1
(a)(i) 1 Elasic poenial energy
Direcly proporional (ii) 1(b)(i) 1 Increases
Decreases1Quesion 2(a) 1 [semi circle shape]
[same ]1(b) 1 Diffracion(c) 1 (4 cm s 1) / 1 cm
4 Hz1Quesion 3(a) 1 Beam o elecrons wih high kineic energy
(b) 1 o emi elecrons by hermionic emmision
(c)111
Velociy = 2x1.6x10-19x5000 9x10-31
r = 1.78x1021 m s-1
(d) 1 More sensiiveQuesion 4
(a)(i) 1 Image ha canno be ormed on a screen(ii) 1 Reracion
(b)(i) 2
(ii) 1 Magniy or uprigh
(c) 2
1
f =
1
v +
1
u
1
20=1
v+1
10
v = 20cm
Quesion 5(a)(i) 1 h2 > h1
(ii) 1 emperaure in 5.1 smaller(b) 1 As emperaure increases, heigh increases
1 When emperaure increases, disance beween molecules increases1 Disance beween molecules increases wih volume
(c) 1 Charles law(d) 1 h1 increases
1 When orce or pressure decreases, volume increases
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Quesion 6(a) 1 Isoope wih unsable nucleus(b) 1 Te aciviy decreases wih ime
1 Te rae o decay o Q is higher(c) 1 P = 4.0 s
1 Q = 1.0 s
(d) 1 Te aciviy reduced by halved in a specific inerval o ime1 Hal-lie(e) 1 4000 2000 1000 500 or 500 couns per minueQuesion 7
(a) (i) 1 Pascals principle(ii) 1 Incompressible
(b)(i) 1 5000 N m-2
(ii) 1 F = 5000x2 1 = 10,000 N
1 m = 1000 kg (iii) 1 heigh o pison decreases(c) 1 Increase he cross-secional area
1 Increase he hickness o he wall(d) 1 Hydraulic jackQuesion 8(a) [righ direcion o arrow a emiter]
Pnp(b)(i) 10 V
(ii)1
2 = R1
(12) 1000 + R
1
1 R = 200(c)(i) Resisor S
1
VB = 400(12)
400+35001 = 1.23 V1 Resisor , VB = 1.63 V1 Resisor U, VB = 2.23 V
(ii) 1 Resisor 1 Te base volage more han 2 V
(iii) 1 Collecor curren flows
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Bahagian Mark Answer SchemeQuesion 9(a) 1 Te degree o honess
(b)
123
45
In solid sae, emperaure increases i energy increasesIn liquid sae, emperaure increases i energy increasesemperaure unchange during meling
Energy is used o break he bond beween he molecule in solidTe energy used is called laen hea o ussion
(c)
1234
Add in ice cubesSir he coffeeIce absorb hea rom coffeeTe rae o hea absorbion is bigger i he differen in emperaure beween ice and liquid is bigger
(d)
12345
6789
10
Pipe in a shape o coil wrapped around he reezerIncrease he area will increase he rae o hea absorpionPipe is made rom low specific hea capaciyGood conducor o heaFreon
Can easily evaporae a low emperaure and pressureTe box is wrapped wih he insulaorReduce he flow o hea rom surrounding ino he baxEquipped wih he hermosaeemperaure inside can be conrolled
Quesion 10(a) 1 Producion o curren when a conducor wire cu he magneic flux
(b)
12345
Te pendulum bob is released a higher level in Figure 10.1 (b)Te bulb lighs up brigher in Figure 10.1 (b)
As he heigh released increases, he speed o wire cu he magneic field increasesAs brighness increases, induced curren increasesAs speed increases, induced curren increases
(c)
1234
Induced currenCurren agains ime is labelled wih sinusoidal shapeSecond signal has higher ampliudeSecond signal has smaller period
(d)
1234567
89
10
Curved shape permanen magneMagneic field is uniorm around he coilReplace commuaor wih slip ringCurren flow in he bulb in wo direcionIncrease he number o coilMore curren producedTe coil wound on he sof iron core
Increase he inensiy o magneic fieldLaminaed sof iron core is usedo reduce eddy curren
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Bahagian Mark Answer SchemeQuesion 11
(a)(i) 1Phenomenon o ligh which reflec ligh in denser medium when he angle o incidence is bigger han he criicalangle c.
(ii)
11
11111111
High reracive indexMedium is denser
Siffness is lowCan easily benSrengh is highOpical fibre will no breakSmall criical angleoal inernal reflecion is more likely o ake place
WHigh reracive index, Siffness is low, Srengh is high,Small criical angle
(b)(i)11
Correc subsiuion, n = 1/ (sin c) , c = sin 12.43c = 24.3O
(ii)
1
111
Reracion occur when ligh eners diamond
oal inernal reflecion occur several imes in he diamondReracion occur a differen angleDifferen colours emited
(iii)11
Less sparklingCriical angle increases
(iv)11
NoBigger criical angle
Bahagian Mark Answer SchemeQuesion 12
(a)(i) 1 Rae o charge flow
(ii)1
1
I curren flow is high, emperaure increases
Wire will mel
(iii)
1111111111
High resisanceLarge hea energy producedLow meling poin
Wire easily mel when meling poin is reachedLow specific hea capaciyemperaure rise easilySmall diameerHigh resisanceRHigh resisance, Low meling poin, Low specific hea capaciy and Small diameer
(b)(i)11
Correc subsiuion, E = P = 1000 x 2 x 60E = 120 000 J
(ii)111
E = VII = 120 000 / ( 240 x 120)= 4.17 A
(c)11
Live wireCurren flow in he elecric appliance hrough live wire
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Bahagian Mark Answer SchemeQuesion 1
(a)(i) 1 Lengh o wire
(ii) 1 Resisance (iii) 1 Tickness o wire
(b) 7
1. Show columns o l , V and R2. Correc unis o l , V and R.3. A leas 2 readings o V correc4. All readings o V correc5. Readings o l and V consisen o 1 d.p.6. Correc calculaion o R.7. Values o R consisen o 1 d.p
l / cm V / vol R / 20.0 0.4 0.8
40.0 0.9 1.860.0 1.2 2.480.0 1.6 3.2
100.0 1.9 3.8
(c) 5
Draw R agains lA. R on Y axis and l on X axisB. Boh axes have correc unisC. Boh axes has uniorm and no odd scaleD. 5 poins plo correclyE. 3 poins plo correclyF. Bes fi line (min 3 poins)
G. Minimum size 5x4 box o 2x2cmNo. correc Score
7 5
5-6 4
3-4 3
2 2
1 1
(d) 1 R is direcly proporional o lTotal 16
Physics Paper 3
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20 60
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0.4
0.8
1.2
1.6
2.0
2.4
2.8
3.2
3.6
4.0
0 40 80 100
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Bahagian Mark Answer SchemeQuesion 2
(a)(i) 1 Direcly proporional
(ii)11
Show on he graph16 C
(iii)1
1
= 35 C / Show on he graph
= 260 s
(iv) 3
1. Draw a riangle on he graph2. Subsiue he values3. Answer wih correc uni0.1346 C s - 1
(b) 3
1. Rearrange he ormula = P
mc2. Subsiue he values c = 25 5
0.1346(0.5)
3. Answer wih correc uni 371.47 J kg -1C -1
(c) 1 Conainer wrapped wih insulaor o preven hea los o he surroundingTotal 16
Bahagian Mark Answer SchemeQuesion 3
1 Inerence: Te srengh o elecromagne depends on curren flow.1 Hipoesis : As curren increases, he srengh o elcromagne increases.1 Aim: o invesigae he relaionship beween curren and he srengh o elecromagne.1
1
Variable : Manipulaed: CurrenResponding: Number o pin atraced o he sof iron
Fixed: Number o urns o coil1 Apparaus: Solenoid, ammeer, pins, rheosa, dry cell, beaker, swich and conneing wires
1
Arrangemen:
111
Procedure:1. Swich on he circui and adjus rheosa so ha he curren flow, I = 0.2 A2. Coun he number o pins, N atraced o he sof iron.
3. Repea wih curren = 0.3 A 0.4 A , 0.5 A and 0.6 A
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1
Resul:
I / A N
0.2
0.30.4
0.5
0.6
1 Analisis: Plo N agains I graph
Bahagian Mark Answer SchemeQuesion 4
Inerence: Period o oscillaion depends on mass o load1 Hipoesis:As mass increases, period increases.1 Aim: o invesigae he relaionship beween mass and period
1Variables:MV massRV periodFV spring consan
1 Apparaus: Beam balance, load, spring, reor sand, sop wach
1
Arrangemen:
111
Procedure:1. A load o mass, m = 50 hung on he spring.2. Pull he load and release. ime aken o make 10 oscillaion is recorded and he period is deermined3. Repea wih mass, m = 100 g , 150 g 200 g and 250 g.
1
Resul:
m/g /s
1 Analysis: Plo agains m graph
spring
Load
Retort stand
pemegang
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