2213-6510 13 pages

M13/4/PHYSI/SPM/ENG/TZ1/XX

Monday 6 May 2013 (morning)

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 2013

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1. Themassofanelephantis104kg.Themassofamouseis10–2kg.Whatistheratio

massoftheelephantmassofthemouse

?

A. 10–8

B. 10–6

C. 106

D. 108

2. Anarcheraimsfivearrowsatthecentreofatarget.Thearrowsstrikethetargetasshownbelow.

Whichofthefollowingdescribestheaimofthearcher?

A. Accurateandprecise

B. Accuratebutnotprecise

C. Precisebutnotaccurate

D. Neitheraccuratenorprecise

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3. ThegraphbelowshowshowvelocityvvarieswithtimetforaballthrownverticallyupwardsfromtheEarth’ssurface.

v

t00

Theshadedareaisequaltothe

A. displacement.

B. finalvelocity.

C. changeinvelocity.

D. acceleration.

4. Twoidenticalballsaredroppedfromatallbuilding,oneafewsecondsaftertheother.Airresistanceisnotnegligible.Astheballsfall,thedistancebetweentheballswill

A. decrease.

B. increase.

C. increasethenremainconstant.

D. remainconstant.

5. Whichofthefollowingisalwaystrueforanobjectmovinginastraightlineatconstantspeed?

A. Noforcesactontheobject.

B. Noresultantforceactsontheobject.

C. Themomentumoftheobjectiszero.

D. Noworkisbeingdoneontheobject.

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6. Apersonofweight600Nisstandingonaweighingscaleinalift(elevator).Theliftisacceleratingupwardsat1.0ms–2.Whichofthefollowingisthereadingonthescale?

a=1.0ms–2

A. 0N

B. 540N

C. 600N

D. 660N

7. Aspaceshipismovingatconstantspeedinouterspace.Aninternalexplosioncausesittobreakintotwopiecesthatmoveinoppositedirections.Whichofthefollowingbestdescribeswhathappenstoitstotalmomentumandtotalkineticenergyasaresultoftheexplosion?

Total momentum Total kinetic energy

A. unchanged unchanged

B. unchanged increased

C. increased unchanged

D. increased increased

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8. Ahorizontaldiscisrotatingaboutaverticalaxisthroughitscentre.PointsPandQonthediscareatdistancesRand2Rrespectivelyfromthecentre.

P

R2R

Q

TheaccelerationatPisa.WhichofthefollowingistheaccelerationatQ?

A. 0.5a

B. a

C. 2a

D. 4a

9. 4.0kg of water at 100 C° is mixed with 1.0kg of water at 0 C° in a container insulated fromthesurroundings.Whichofthefollowingisthefinaltemperatureofthewater?

A. 20 C°

B. 25 C°

C. 75 C°

D. 80 C°

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10. Whichofthefollowingbestdescribestheevaporationofaliquid?

Location of process Temperature at which process can occur

A. atsurface atanytemperatureofliquid

B. atsurface atmaximumliquidtemperatureonly

C. throughoutliquid atanytemperatureofliquid

D. throughoutliquid atmaximumliquidtemperatureonly

11. Whichofthefollowingisthetemperatureofanobjectrelatedto?

A. Thekineticenergyoftheobject

B. Therandomkineticenergyoftheparticlesintheobject

C. Thepotentialenergyoftheparticlesintheobject

D. Thesumoftherandomkineticenergyandpotentialenergyoftheparticlesintheobject

12. Theaccelerationofanobjectexecutingsimpleharmonicmotionisproportionaltothe

A. displacementoftheobjectfromequilibrium.

B. velocityoftheobject.

C. amplitudeofoscillation.

D. frequencyofoscillation.

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13. A system, consistingof amassM connected to a spring, oscillates on a frictionless surfacewithsimpleharmonicmotionbetweentwopoints,XandY.PointOisthecentreoftheoscillation.

M

X O Y

For the system, at which of the following points is the elastic potential energy equal to thekineticenergy?

A. Oonly

B. XandYonly

C. O,XandY

D. NeitherO,XnorY

14. Microwaveovenscausethewatermoleculesinfoodtoresonate. Watermoleculeshaveanaturalfrequencyofvibrationf .Inordertoheatthefoodmosteffectively,thefrequencyofthemicrowavesshouldhaveavalue

A. lessthanf .

B. equaltof .

C. greaterthanf .

D. aslargeaspossible.

15. Gas particles are equally spaced along a straight line. A sound wave passes through the gas.Thepositionsofthegasparticlesatoneinstantareshownbelow.

Whichofthedistancesshownisequaltothewavelengthofthewave?

A.

B.

C. D .

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16. Aparticlewithpositivecharge+qmovesfreelyfromoneplateheldatpotentialV1toanotherplateheldatpotentialV2.

V1 V2

+q

Whichofthefollowingistheelectricpotentialenergylostbythecharge?

A. 1qV

B. 2qV

C. ( )1 2q V V+

D. ( )1 2q V V−

17. Which of the following graphs shows the relationship between current I and voltage V for afilamentlamp?

A.

0

I

V0

B.

0

I

V0

C.

0

I

V

0

D.

0

I

V

0

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18. Acellofnegligibleinternalresistanceisconnectedtothreeidenticallamps.Avoltmeterisconnectedacrossoneofthelamps.

X

IfthefilamentinlampXbreaks,thereadingonthevoltmeterwill

A. becomezero.

B. decrease.

C. staythesame.

D. increase.

19. Thegravitationalfieldstrengthatthesurfaceofacertainplanetisg.Whichofthefollowingisthegravitationalfieldstrengthatthesurfaceofaplanetwithtwicetheradiusandtwicethemass?

A.2g

B. g

C. 2g

D. 4g

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20. Two point charges of size +2q and –q are placed as shown below. In which of the regionsI,IIandIIIcantheresultantelectricfieldstrengthbezero?

+2q –q

I II III

A. Ionly

B. IIonly

C. IIIonly

D. IandIIIonly

21. Awireisplacedinamagneticfieldwhichisdirectedtotheright.Thewirecarriesacurrentdirectedintothepage.Whichofthefollowingisthedirectionoftheforceonthewire?

A.

B.

C.

D.

magneticfield

22. Whichofthefollowingwoulddecreasetheinitialactivityofasampleofplutonium?

A. Placingthesampleinaleadcontainer

B. Placingthesampleinadarkroom

C. Decreasingthemassofthesample

D. Decreasingthetemperatureofthesample

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23. A radioactivesampleof initialactivity12Bqhasahalf-lifeof3days. What is theactivityafter6days?

A. 2Bq

B. 3Bq

C. 4Bq

D. 6Bq

24. Thereaction14 4 17 17 2 8 1N O pα+ → + isanexampleof

A. alphadecay.

B. artificialtransmutation.

C. nuclearfusion.

D. protondecay.

25. Thediagrambelowshowsanenergyflowdiagram(Sankeydiagram)foracar.

Kinetic energyof car = 30 kJ

Energy from fuel= 100 kJ

Thermal energy tosurroundings = 70 kJ

Whatistheefficiencyofthecar?

A. 30%

B. 40%

C. 70%

D. 100%

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26. Asmallbiofuelpowerstationburnsethanolwithanoverallefficiencyof25%.Theenergydensityofethanolis30MJkg–1.Themassoffuelconsumedeverysecondis50kg.WhichofthefollowinggivestheusefulpoweroutputinMW?

A. 30 50 25100× ×

B. 30 50 10025

× ×

C. 30 2550 100

××

D. 30 10050 25××

27. Anoscillatingwatercolumnocean-waveenergyconverterproducespowerPfromwavesofacertainamplitudeandwavespeed. Whichof the followingwouldbe thepowerproduced fromwavesoftwicetheamplitudeandtwicethewavespeed?

A. 2P

B. 4P

C. 8P

D. 16P

28. ThetotalpowerradiatedbytheSunisP.ThedistancefromtheSuntotheEarthisd.ThealbedooftheEarthisα.WhatisthepowerabsorbedbyeachsquaremetreoftheEarth’ssurface?

A. 24 d Pαπ

B.24

Pdαπ

C. ( )24 1d P απ −

D. ( )2

14

Pdα−

π

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29. Carbondioxideisagreenhousegasbecause

A. itabsorbsinfraredlightradiatedbytheSun.

B. itabsorbsultravioletlightradiatedbytheEarth.

C. itsnaturalfrequencymolecularoscillationliesintheinfraredregion.

D. itsnaturalfrequencymolecularoscillationliesintheultravioletregion.

30. Whichofthefollowingismostlikelytoincreasetherateofglobalwarming?

A. Deforestation

B. Increasingtheuseofnuclearpowerstations

C. Increasingtheuseofrenewableenergysources

D. Usingnaturalgasinsteadofcoalforelectricitygeneration