内容文稿试题

UNIVERSITYOFCAMBRIDGEINTERNATIONALEXAMINATIONS

General ofEducationAdvancedSubsidiaryLevelandAdvancedLevel

PHYSICS 9702/01

Paper1MultipleChoice

AdditionalMaterials: MultipleChoiceAnswerSheet

Softcleaneraser

October/November2004

1hour

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READTHESEINSTRUCTIONSFIRST

Writeinsoftpencil.

Donotusestaples,paperclips,highlighters,glueorcorrectionfluid.

Writeyourname,CentrenumberandcandidatenumberontheAnswerSheetinthespacesprovidedunlessthishasbeendoneforyou.

Therearefortyquestionsonthispaper.Answerallquestions.

ForeachquestiontherearefourpossibleanswersA,B,CandD.ChoosetheoneyouconsidercorrectandrecordyourchoiceinsoftpencilontheseparateAnswerSheet.

ReadtheinstructionsontheAnswerSheetverycarefully.

Eachcorrectanswerwillscoreonemark.Amarkwillnotbedeductedforawronganswer.Anyroughworkingshouldbedoneinthisbooklet.

This

consistsof17printedpagesand3blankpages.

IB0411_9702_01/4RP

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Data

speedoflightinspace, c=3.00x108ms1

µ

permeabilityof space, =4πx107Hm10

ε

permittivityof space, =8.85x1012Fm1

0

elementarycharge, e=1.60x1019C

thenckconstant, h=6.63x1034Js

unifiedatomicmassconstant, u=1.66x1027kg

restmassofelectron, me=9.11x1031kg

restmassofproton, mp=1.67x1027kg

molargasconstant, R=8.31JK1mol1

theAvogadroconstant, NA=6.02x1023mol1

theBoltzmannconstant, k=1.38x1023JK1

gravitationalconstant, G=6.67x1011Nm2kg2

accelerationoffall, g=9.81ms2

Formulae

2

uniformlyacceleratedmotion, s ut+1at2

v2 u2+2as

workdoneon/byagas, W p∆V

Gm

gravitationalpotential,

simpleharmonicmotion,

φ r

a ω2x

velocityofparticleins.h.m., v v0cosωt

0

v ±ω√(x2–x2)

resistorsinseries, R R1+R2+...

resistorsinparallel, 1/R 1/R1+1/R2+...

electricpotential,

V Q

4πε0r

capacitorsinseries, 1/C 1/C1+1/C2+...

capacitorsinparallel, C C1+C2+...

2

energyofchargedcapacitor, W

1QV

alternatingcurrent/voltage, x x0sinωt

hydrostaticpressure, p ρgh

pressureofanidealgas,

p 1Nm<c2>

3V

radioactivedecay, x x0exp(–λt)

decayconstant,

λ 0.693

t1

2

criticaldensitymatteroftheUniverse,

3H2

0

ρ0 8πG

equationofcontinuity, Av constant

Bernoulliequation(simplified),

p+1ρv2 p+1ρv2

1 2 1 2 2 2

Stokes'law, F Arηv

Reynolds'number,

R ρvr

e η

draginturbulentflow, F Br2ρv2

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Whichlineofthetablegivesvaluesthatareequaltoatimeof1ps(onepicosecond)andadistanceof1Gm(onegigametre)?

timeof1ps

distanceof1Gm

A

109s

109m

B

109s

1012m

C

1012s

109m

D

1012s

1012m

Whichofthefollowingdefinitionsiscorrectandusesonlytiesratherthanunits?

Densityismasspercubicmetre.

Potentialdifferenceisenergyperunitcurrent.

Pressureisperunitarea.

Speedisdistancetravelledpersecond.

Whenabeamoflightisonasurface,itdeliversenergytothesurface.Theintensityofthebeamisdefinedastheenergydeliveredperunitareaperunittime.

Whatistheunitofintensity,expressedinSIbaseunits?

kgm2s1 B kgm2s3 C kgs2 D kgs3

Thedeflectionoftheneedleofanammetervarieswiththecurrentpassingthroughtheammeterasshowninthegraph.

deflection

oftheammeterneedle

0

0 current

Whichdiagramcouldrepresenttheappearanceofthescaleofthismeter?

A B

8 1

1 2 3 4 5 67 234 5 6 7 8

0 9 0 9

C D

0 1 23456 7 8 9 0123 4 5 6 789

6

7

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Whena12V50HzsupplyisconnectedtotheY-terminalsofanoscilloscope,thetraceinthediagramisobtained.

1cm

1cm

Whatisthesettingofthetime-basecontrol?

2.0mscm1 B 2.5mscm1 C 5mscm1 D 20mscm1

Fourstudentseaadeaseriesofmeasurementsoftheaccelerationoffallg.Thetableshowstheresultsobtained.

Whichstudentobtainedasetofresultsthatcouldbedescribedasprecisebutnotaccurate?

student

results,g/ms2

A

9.81

9.79

9.84

9.83

B

9.81

10.12

9.89

8.94

C

9.45

9.21

8.99

8.76

D

8.45

8.46

8.50

8.41

Intheabsenceofair,astoneisthrownfromPandfollowsaparabolicpathinwhichthehighestpointreachedisT.ThestonereachespointQjustbeforelanding.

P

Q

T

Theverticalcomponentofaccelerationofthestoneis

zeroatT.

greatestatT.

greatestatQ.

thesameatQasatT.

Whenacardriverseesahazardahead,sheappliesthebrakesassoonasshecanandbringsthecartorest.Thegraphshowshowthespeedvofthecarvarieswithtimetafterthehazardisseen.

v

t

t

0

0 1 2t

Whichgraphrepresentsthevariationwithtimetofthedistancestravelledbythecarafterthehazardhasbeenseen?

A B

0 t

1

t

2 t

s s

0

0

t

t

0 1 2t

C D

s s

t

t

t

0 0

t

2

0 1 2t 0 1 t

8

9

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Anobjectfalls10.0mfromrestbeforeenteringsomewater.

Assumingnegligibleair,whatisthetimetakentoreachthewandthespeedwithwhichtheobjectreachesthewater?

time/ms

speed/ms1

A

1.02

10.0

B

1.02

14.0

C

1.43

10.0

D

1.43

14.0

Aconstantmassundergoesuniformacceleration.

Whichofthefollowingisacorrectstatementabouttheresultantactingonthemass?

Itincreasesuniformlywithrespecttotime.

Itisconstantbutnotzero.

Itisproportionaltothediscementfromafixedpoint.

Itisproportionaltothevelocity.

Aparticleofmassmstrikesaverticalrigidwallperpendicularlyfromtheleftwithvelocityv.

v

m

rigidwall

Ifthecollisionisperfectlyelastic,thetotalchangeinmomentumoftheparticlethatoccursasaresultofthecollisionis

2mvtotheright.

2mvtotheleft.

mvtotheright.

mvtotheleft.

Whichtwovectordiagramsrepresentsinequilibrium?

P Q

R S

PandQ

QandR

RandS

SandP

Alonguniformbeamispivotedatoneend.Aof300Nisappliedtoholdthebeamhorizontally.

2.5m

0.5m

pivot

beam

300N

Whatistheweightofthebeam?

A 300N B 480N C 600N D 960N

Anelectronissituatedinauniformelectricfield,asshowninthediagram.

electron

field

Whatisthedirectionoftheelectricactingontheelectron?

downwards

totheleft

totheright

upwards

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Thekineticenergyofaparticleisincreasedbyafactorof4.Bywhatfactordoesitsspeedincrease?

2 B 4 C 8 D 16

Ahorizontalof90Nisusedtopushaboxacrossahorizontalfloor.Thefrictionalontheboxis50N.

Whatisthegaininkineticenergyoftheboxwhenitismovedthroughadistanceof6.0m?

A 240J B 300J C 540J D 840J

Acyclistiscapableofgeneratingaagepowerof3.0kWduringa4.0kmspeedtrial.Hisaerodynamicsuitandpositiononthecyclereduceresistivesto180N.

Whatistheapproximatetimeachievedinthespeedtrial?

A 140s B 240s C 1300s D 2200s

Aconstantof9.0kN,paralleltoaninclinedne,movesabodyofweight20kNthroughadistanceof40malongtheneatconstantspeed.Thebodygains12minheight,asshown.

40m

9.0kN

12m

20kN

Howmuchoftheworkdoneisdissipatedasheat?

120kJ B 240kJ C 360kJ D 600kJ

Whichstatementappliestotheboilingbutnottotheevaporationofaliquid?

Allthebondsbetweenmoleculesintheliquidarebroken.

Atnormalatmosphericpressure,theprocessoccursatonetemperatureonly.

Energymustbeprovidedfortheprocesstohappen.

Theseparationofthemoleculesincreasesgreatly.

Thediagramshowstwoliquids,labelledPandQ,whichdonotmix.TheliquidsareinequilibriuminanopenU-tube.

P

x

x Q

x

Whatistheratio

1

2

densityofP?

densityofQ

2 3

3 C 2 D 2

Whichtwosubstancesarenormallybothcrystalline?

copperanddiamond

copperandglass

diamondandglass

diamondandrubber

Thetableshowsaloadappliedtofourwiresandthecross-sectionalareaofeach.

Whichofthewiresissubjectedtothegreateststress?

load/N

cross-sectional

area/mm2

A

1500

0.25

B

2000

1.0

C

3000

0.56

D

5000

2.3

TheFrequiredtoextendasampleofrubberbyadistancexisfoundtovaryasshown.

F/N

40

30

20

10

0

0 1 2 3 4 5

x/m

Theenergystoredintherubberforanextensionof5mis

lessthan100J.

100J.

between100Jand200J.

morethan200J.

Whichofthefollowingisalongitudinalwave?

alightwavetravellingthroughair

aradiowavefromabroadcastingstation

arippleonthesurfaceofwater

asoundwavetravellingthroughair

Astationarysoundwaveissetupalongthelinejoininoloudspeakers.

Whieasurementissufficientonitsowntoenableyoutodeducethewavelengthofthewave?

theamplitudeofthesoundwave

thedistancebetweenthetwoloudspeakers

thedistancebetweentwoadjacentantinodes

thefrequencyofthesoundwave

Awaveofamplitude20mmhasintensityIX.Anotherwaveofthesamefrequencybutofamplitude5mmhasintensityIY.

Whatis

IX?

IY

A 2 B 4 C 16 D 256

Thediagramrepresentsastationarywaveonastretchedstring.

P

x

WhatisrepresentedbypointPandbythelengthx?

pointP

lengthx

A

antinode

onewavelength

B

antinode

twowavelengths

C

node

onewavelength

D

node

twowavelengths

Fringesofseparationyareobservedonascreen1.00mfromaYoung’sslitarrangementthatisilluminatedbyyellowlightofwavelength600nm.

Atwhichdistancefromtheslitswouldfringesofthesameseparationybeobservedwhenusingbluelightofwavelength400nm?

A 0.33m B 0.67m C 0.75m D 1.50m

Twoparallel,conductingteswithairbetweenthemarecedclosetooneanother.Thetopteisgivenanegativechargeandthebottomoneisearthed.

Whichdiagrambestrepresentsthedistributionofchargesandthefieldinthissituation?

A B

_ _ _ _ _ _

_ _ _ _ _ _ _

+ + + + + + +

_

C D

_

_ _ _ _ _

_ _ _ _ _ _

+ + + + + + +

Inauniformelectricfield,whichstatementiscorrect?

Allchargedparticleperiencethesame.

Allchargedparticlesmovewiththesamevelocity.

Allelectricfieldlinesaredirectedtowardspositivecharges.

Allelectricfieldlinesareparallel.

Whichofthefollowingdescribestheelectricpotentialdifferencebetweentwopointsinawirethatcarriesacurrent?

therequiredtomoveaunitpositivechargebetweenthepoints

theratiooftheenergydissipatedbetweenthepointstothecurrent

theratioofthepowerdissipatedbetweenthepointstothecurrent

theratioofthepowerdissipatedbetweenthepointstothechargemoved

Thediagramshowsfourheatersandthecurrentineach.Whichheaterhasthegreatestpowerdissipation?

8A 2

A

6A 4

B

4A 6

C

2A 8

D

WhenapotentialdifferenceVisappliedbetweensofawireofdiameterdandlengthl,thecurrentinthewireisI.

Whatisthecurrentwhenapotentialdifferenceof2Visappliedbetweensofawireofthesamematerialofdiameter2dandthelength2l?Assumethatthetemperatureofthewireremainsconstant.

I B2I C4I D8I

Theofathermistordecreasessignificantlyasitstemperatureincreases.Thethermistoriskeptinair.Theairisatroomtemperature.

WhichgraphbestrepresentsthewayinwhichthecurrentIinthethermistordependsuponthepotentialdifferenceVacrossit?

B C D

I I I I

0 0

0 V 0 V

0 0

0 V 0 V

ThediagramshowsajunctioninacircuitwherethreewiresP,QandRmeet.ThecurrentsinPandQare1Aand3Arespectively,inthedirectionsshown.

3A

1A

Q

P

R

HowmanycoulombsofchargepassagivenpointinwireRin5seconds?

A 0.4 B 0.8 C 2 D 10

Thediagramshowsapotentialdividercircuitdesignedtoprovideavariableoutputp.d.

5.0k

5.0k

9.0V

output

Whichgivestheavailablerangeofoutputp.d?

umoutput

minimumoutput

A

3.0V

0

B

4.5V

0

C

9.0V

0

D

9.0V

4.5V

Inthecircuitshown,theammetershavenegligibleandthevoltmetershaveinfinite.

I

1

3

I

2 2

A

A

6

2

V

V

V1 V2

ThereadingsonthemetersareI1,I2,V1andV2,aslabelledonthediagram.Whichiscorrect?

I1>I2andV1>V2

I1>I2andV1<V2

I1<I2andV1>V2

I1<I2andV1<V2

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Thesymbol32Ge

representsan