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2212-6510 13 pages
M12/4/PHYSI/SPM/ENG/TZ1/XX
Thursday 10 May 2012 (afternoon)
PHYSICSSTANDARD LEVELPAPER 1
INSTRUCTIONS TO CANDIDATES
• Do not open this examination paper until instructed to do so.• Answer all the questions.• For each question, choose the answer you consider to be the best and indicate your choice
on the answer sheet provided.• A clean copy of the Physics Data Booklet is required for this paper.• The maximum mark for this examination paper is [30 marks].
45 minutes
© International Baccalaureate Organization 2012
22126510
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1. Whatistheorderofmagnitudeofthemass,inkg,ofanapple?
A. 10–3
B. 10–1
C. 10+1
D. 10+3
2. The diagram below shows the forces acting on a block ofweight W as it slides down a slope.Theanglebetweentheslopeandthehorizontalisθ,thenormalreactionforceontheblockfromtheslopeisNandfrictionisnegligible.
N
W
θ
θ
θ
Whichofthefollowinggivestheresultantforceontheblock?
A. W sinθ
B. W cosθ
C. N sinθ
D. N cosθ
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3. Thevelocity–timegraphforanacceleratingobjectthatistravellinginastraightlineisshownbelow.
velocity/ms–1
5.0
4.0
3.0
2.0
1.0
00 1.0 2.0 3.0 4.0 5.0
time/s
Whichofthefollowingisthechangeindisplacementoftheobjectinthefirst5.0seconds?
A. 25.0m
B. 12.5m
C. 5.0m
D. 1.0m
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4. Anobjectfallsverticallyfromrest.Airresistanceactsontheobjectanditreachesaterminalspeed.Whichofthefollowingisthedistance–timegraphforitsmotion?
A.
distance
00 time
B.
distance
00 time
C.
distance
00 time
D.
distance
00 time
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5. ApendulumswingsbackandforthinacirculararcbetweenXandY.
X Y
Thependulumbobis
A. alwaysinequilibrium.
B. onlyinequilibriumatXandY.
C. inequilibriumasitpassesthroughthecentralposition.
D. neverinequilibrium.
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6. Ablockofmass m ismovingatconstantvelocity v alonga frictionless surface that isheighth abovetheground.
v
h
Whichexpressiongivestheworknecessarytomaintaintheconstantvelocity?
A. mgh
B. 212
mv
C. 212
mgh mv+
D. zero
7. Whichofthefollowingisanelasticcollision?
A. Tworailwaytruckscollideandtheylinktogether.
B. Tworailwaytruckscollideandtheydonotlinktogether.
C. Twogasmoleculescollideandeachchangesdirection.
D. Twogasmoleculescollideandabondisformedbetweenthem.
8. Acarmovesatconstantspeedaroundahorizontalcirculartrack.Theresultantforceonthecarisalwaysequalto
A. theforwardforcefromtheengine.
B. thesidewaysfrictionbetweenthetyresandthetrack.
C. theweightofthecar.
D. zero.
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9. Thetotalpotentialenergyandrandomkineticenergyofthemoleculesofanobjectisequaltothe
A. heatenergyintheobject.
B. internalenergyoftheobject.
C. thermalenergyintheobject.
D. workstoredintheobject.
10. Whichofthefollowingcorrectlydistinguishesbetweentheevaporationandtheboilingofaliquidunderatmosphericpressure?
Evaporation Boiling
A. takesplaceatonefixedtemperature occursatthesurfaceoftheliquid
B. takesplaceatalltemperatures occursatthesurfaceoftheliquid
C. takesplaceatonefixedtemperature occursthroughoutthebodyoftheliquid
D. takesplaceatalltemperatures occursthroughoutthebodyoftheliquid
11. AnidealgashasanabsolutetemperatureT. Theaveragerandomkineticenergyofthemoleculesofthegasis
A. independentofT.
B. equaltoT. C. proportionaltoT.
D. inverselyproportionaltoT.
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12. Anobjectisundergoingsimpleharmonicmotion(SHM)aboutafixedpointP.ThemagnitudeofitsdisplacementfromP isx.Whichofthefollowingiscorrect?
Magnitude of resultant force Direction of resultant force
A. proportionaltox towardsP
B. inverselyproportionaltox towardsP
C. proportionaltox awayfromP
D. inverselyproportionaltox awayfromP
13. Anobjectundergoessimpleharmonicmotion(SHM).Thetotalenergyoftheobjectisproportionalto
A. theamplitudeoftheoscillations.
B. thetimeperiodoftheoscillations.
C. thefrequencyoftheoscillations.
D. themassoftheobject.
14. Whatregionoftheelectromagneticspectrumincludeswavesofwavelength5×10–8m?
A. X-ray
B. Ultraviolet
C. Infrared
D. Microwave
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15. Arayoflighttravelsfromavacuumintoglassasshownbelow.
vacuum
glass
Inglass,lighthasspeedv .Inavacuum,lighthasspeedc.Whichofthefollowinggivestherefractiveindexofglass?
A.cv
B.vc
C. sinsin
cv
D. sinsin
vc
16. Theampereisdefinedintermsof
A. powerdissipatedinawireofknownlength,cross-sectionalareaandresistivity.
B. potentialdifferenceacrossaresistanceofknownvalue.
C. numberofelectronsflowingpastapointinacircuitinagiventime.
D. forceperunitlengthbetweenparallelcurrent-carryingconductors.
17. Abatteryofemf6.0Visconnectedtoa2.0Ωresistor.Thecurrentinthecircuitis2.0A.Theinternalresistanceofthebatteryis
A. zero.
B. 1.0Ω.
C. 3.0Ω.
D. 4.0Ω.
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18. Whichofthefollowinggivestheresistancesofanidealammeterandanidealvoltmeter?
Resistance of ideal ammeter Resistance of ideal voltmeter
A. infinite infinite
B. zero infinite
C. infinite zero
D. zero zero
19. AmassatpointX givesrisetoagravitationalfieldstrengthg atpointPasshownbelow.
X P
AnidenticalmassisplacedatpointYasshownbelow.
X P Y
TheresultantgravitationalfieldstrengthatPisnow
A. greaterthan2g.
B. between2gandg.
C. betweengandzero.
D. zero.
20. Theelectricfieldstrengthbetweentwooppositelychargedparallelplates
A. hasthesamevalueeverywherebetweenthetwoplates.
B. decreasesfromthepositiveplatetothenegativeplate.
C. islargerattheedgesthaninthecentre.
D. issmallerattheedgesthaninthecentre.
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21. Threeparallelwires,X,YandZ,carryequalcurrentsintothepage.
WhicharrowrepresentsthedirectionofthemagneticforceonwireZ?
A.
B.
C.
D.
22. Whencomparedwithbetaparticlesandgamma-rayphotons,alphaparticleshavethegreatest
A. mass.
B. penetratingpower.
C. rangeinair.
D. speed.
23. Whichstatementcorrectlydescribestheprocessofnuclearfusion?
A. Thejoiningtogetheroftwosmallatomstocreatealargeratom.
B. Thesplittingupofalargeatomtocreatetwosmalleratoms.
C. Thejoiningtogetheroftwosmallnucleitocreatealargernucleus.
D. Thesplittingupofalargenucleustocreatetwosmallernuclei.
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24. Thefractionoftheworld’senergyconsumptionprovidedbynuclearenergyis
A. lessthan0.2%.
B. between0.2%and2%.
C. between2%and20%.
D. greaterthan20%.
25. The burning of fossil fuels in power stations produces greenhouse gases. Another potentialenvironmentalproblemisthat
A. theemissionscandestroytheozonelayer.
B. theemissionscancauseacidrain.
C. themaximumefficiencyisverylow.
D. theenergydensityofthefuelsislowcomparedtorenewableresources.
26. Inanuclearpowerstation,inordertoincreasethechancesofachainreaction
A. kineticenergyisremovedfromtheneutrons.
B. kineticenergyisgiventotheneutrons.
C. someneutronsareabsorbed.
D. extraneutronsareadded.
27. Theoriginalsourceoftheelectricalpowerproducedbyawindgeneratoris
A. theSun’sradiatedenergy.
B. thegravitationalenergyoftheSunandtheMoon.
C. nuclearenergystoredwithinatomsintheEarth’satmosphere.
D. theEarth’sinternalenergy.
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28. Increasingthetemperatureofablack-bodywillhavethefollowingeffectonitsemissionspectrum.
Total power radiated Peak wavelength of radiation
A. increases decreases
B. staysthesame decreases
C. increases staysthesame
D. staysthesame staysthesame
29. Anaturalprocessthatcouldcauseanincreaseinglobalwarmingis
A. anincreaseintheradiusoftheEarth’sorbitaroundtheSun.
B. anincreaseintheabsorptionofcarbondioxidebyseawater.
C. adropinmeansea-level.
D. deforestationasaresultofnaturalecosystemchanges.
30. Whatistheunitforthecoefficientofvolumeexpansion?
A. m3K–1
B. m3
C. K
D. K–1