M16/4/PHYSI/SPM/ENG/TZ0/XX

© International Baccalaureate Organization 201617 pages

PhysicsStandard levelPaper 1

45 minutes

Friday 6 May 2016 (morning)

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.yy A clean copy of the physics data booklet is required for this paper.

• The maximum mark for this examination paper is [30 marks].

2216 – 6504

M 16 /4/PHYSI/SPM/ENG/TZ0/XX– 2 –

1. Aspherefitsinsideacube.

Thelengthofthecubeandthediameterofthesphereare10.0±0.2cm.

Whatistheratio percentage uncertaintypercentage uncer

of the volume of the spherettainty cubeof the volume of the

?

A. π

34

B. 1

C. 2

D. 8

2. Aswimmingpoolcontains18× 106kgofpurewater.Themolarmassofwateris18gmol–1.Whatisthecorrectestimateofthenumberofwatermoleculesintheswimmingpool?

A. 104

B. 1024

C. 1025

D. 1033

M16/4/PHYSI/SPM/ENG/TZ0/XX– 3 –

Turn over

3. Anaircraftismovinghorizontally.Aparachutistleavestheaircraftandafewsecondslateropensherparachute.Whichgraphshowsthevariationoftheverticalspeedvwithtimetfortheparachutistfromthetimesheleavestheaircraftuntiljustbeforelanding?

A.v

t00

B.v

t00

C.v

t00

D.v

t00

4. Anobjectofmassmrestsonahorizontalplane.Theangleθ thattheplanemakeswiththehorizontalisslowlyincreasedfromzero.Whenθ  = θ0,theobjectbeginstoslide.WhatarethecoefficientofstaticfrictionμsandthenormalreactionforceNoftheplaneatθ  = θ0?

μs N

A. sinθ0 mgcosθ0

B. tanθ0 mgsinθ0

C. sinθ0 mgsinθ0

D. tanθ0 mgcosθ0

M16/4/PHYSI/SPM/ENG/TZ0/XX– 4 –

5. Astoneisfallingataconstantvelocityverticallydownatubefilledwithoil.Whichofthefollowingstatementsabouttheenergychangesofthestoneduringitsmotionarecorrect?

I. Thegaininkineticenergyislessthanthelossingravitationalpotentialenergy.

II. Thesumofkineticandgravitationalpotentialenergyofthestoneisconstant.

III. Theworkdonebytheforceofgravityhasthesamemagnitudeastheworkdonebyfriction.

A. IandIIonly

B. IandIIIonly

C. IIandIIIonly

D. I,IIandIII

6. Aspringofnegligiblemassandlengthl0hangsfromafixedpoint.Whenamassmisattachedtothefreeendofthespring,thelengthofthespringincreasestol.Thetensioninthespringisequaltok ∆x, where kisaconstantand∆xistheextensionofthespring.Whatisk?

A.mgl0

B. mgl

C.mg

l l− 0

D.mg

l l0 −

M16/4/PHYSI/SPM/ENG/TZ0/XX– 5 –

Turn over

7. Aballwithmassmmoveshorizontallywithspeedu.Theballhitsaverticalwallandreboundsintheoppositedirectionwithspeedv < u.ThedurationofthecollisionisT.Whatarethemagnitudeoftheaverageforceexertedbythewallontheballandthelossofkineticenergyoftheball?

Average force Loss of kinetic energy

A.m u v

T( )+ m u v( )2 2

2−

B.m u v

T( )+ m u v( )− 2

2

C.m u v

T( )− m u v( )2 2

2−

D.m u v

T( )− m u v( )− 2

2

8. Atrainonastraighthorizontaltrackmovesfromrestatconstantacceleration.Thehorizontalforcesonthetrainaretheengineforceandaresistiveforcewhichincreaseswithspeed. WhichgraphrepresentsthevariationwithtimetofthepowerPdevelopedbytheengine?

A.P

t00

B.P

t00

C.P

t00

D.P

t00

M16/4/PHYSI/SPM/ENG/TZ0/XX– 6 –

9. Thegraphshowshowtheaccelerationaofanobjectvarieswithdistancetravelledx.

a/ms–2

30

25

20

15

10

5

0 0 5 10 15 20 25 30 x/m

Themassoftheobjectis3.0kg.Whatisthetotalworkdoneontheobject?

A. 300J

B. 400J

C. 1200J

D. 1500J

M16/4/PHYSI/SPM/ENG/TZ0/XX– 7 –

Turn over

10. Asubstanceisheatedatconstantpower.ThegraphshowshowthetemperatureTofthesubstancevarieswithtimetasthestateofthesubstancechangesfromliquidtogas.

T

t

Whatcanbedeterminedfromthegraph?

A. Thespecificheatcapacityofthegasissmallerthanthespecificheatcapacityoftheliquid.

B. Thespecificheatcapacityofthegasislargerthanthespecificheatcapacityoftheliquid.

C. Thespecificlatentheatoffusionofthesubstanceislessthanitsspecificlatentheat ofvaporization.

D. Thespecificlatentheatoffusionofthesubstanceislargerthanitsspecificlatentheat ofvaporization.

11. Whichofthefollowingisnotanassumptionofthekineticmodelofidealgases?

A. Allparticlesinthegashavethesamemass.

B. Allparticlesinthegashavethesamespeed.

C. Thedurationofcollisionsbetweenparticlesisveryshort.

D. Collisionswiththewallsofthecontainerareelastic.

M16/4/PHYSI/SPM/ENG/TZ0/XX–8–

12. Underwhatconditionsofdensityandpressureisarealgasbestdescribedbytheequationofstateforanidealgas?

A. Lowdensityandlowpressure

B. Lowdensityandhighpressure

C. Highdensityandlowpressure

D. Highdensityandhighpressure

13. ApointsourceemitssoundwavesofamplitudeA.Thesoundintensityatadistancedfromthesourceis I.Whatisthesoundintensityatadistance0.5dfromthesourcewhenthesourceemitswavesofamplitude2A?

A. 16I

B. 4I

C. I

D.14

I

M16/4/PHYSI/SPM/ENG/TZ0/XX– 9 –

Turn over

14. Awaterwavemovesonthesurfaceofalake.PandQaretwopointsonthewatersurface. Thewaveistravellingtowardstheright.

direction of wave

PQ

Thediagramshowsthewaveattimet = 0.WhichgraphshowshowthedisplacementsofPandQvarywitht?

A.1.0

0.5

0

–0.5

–1.0

0 2 4 6 8 10 12 t / s

P QB.

1.0

0.5

0

–0.5

–1.0

P Q

0 2 4 6 8 10 12 t / s

C.1.0

0.5

0

–0.5

–1.0

P Q

0 2 4 6 8 10 12 t / s

D.1.0

0.5

0

–0.5

–1.0

P Q

0 2 4 6 8 10 12 t / s

M 16 /4/PHYSI/SPM/ENG/TZ0/XX– 10 –

15. HorizontallypolarizedlightofintensityI0entersapolarizerPwhosepolarizationaxismakesanangleofθdegreeswiththehorizontal.LightfromPisthenincidentonapolarizerAwithfixedverticalpolarizationaxis.

θ

polarizer A

polarizer P

horizontally polarized light intensity I0

transmitted light intensity I

Theangleθisvariedfrom0to90degrees.Whichofthefollowingrepresentsthevariationwithθ oftheintensityIofthelighttransmittedthroughA?

A.II0

0.50.40.30.20.10.0

B.II0

0.50.40.30.20.10.0

0 45 90 0 45 90θ / ° θ / °

C.II0

0.50.40.30.20.10.0

D.II0

0.50.40.30.20.10.0

0 45 90 0 45 90θ / ° θ / °

M16/4/PHYSI/SPM/ENG/TZ0/XX– 11 –

Turn over

16. ApipeoflengthLhastwoopenends.AnotherpipeoflengthL′hasoneopenendandoneclosedend.

Thefrequencyofthefirstharmonicofbothpipesisthesame.Whatis′L

L?

A. 2

B. 32

C. 1

D. 12

17. Alightraypassesfromairtowaterasshown.

airwater

lightray

Whatarethechangeinthewavelengthofthelightwaveandthechangeintheangletheraymakeswiththenormaltothesurface?

Wavelength Angle with normal

A. increases increases

B. increases decreases

C. decreases increases

D. decreases decreases

M16/4/PHYSI/SPM/ENG/TZ0/XX– 12 –

18. Threefixedcharges,+Q,–Qand–2Q,areattheverticesofanequilateraltriangle.Whatistheresultantforceonanelectronatthecentreofthetriangle?

+Q –2Q

–Q

A.

B.

D.

C.

electron

19. ThegraphshowsthevariationofcurrentIinadevicewithpotentialdifferenceVacrossit.

V / V00

I / A

P2

2010

4

WhatistheresistanceofthedeviceatP?

A. zero

B. 0.1Ω

C. 10Ω

D. infinite

M16/4/PHYSI/SPM/ENG/TZ0/XX– 13 –

Turn over

20. Acircuitconsistsofacellofelectromotiveforce(emf)6.0Vandnegligibleinternalresistanceconnectedtotworesistorsof4.0Ω.

A

6.0 V

4.0 Ω4.0 Ω

Theresistanceoftheammeteris1.0Ω.Whatisthereadingoftheammeter?

A. 2.0A

B. 3.0A

C. 4.5A

D. 6.0A

M16/4/PHYSI/SPM/ENG/TZ0/XX– 14 –

21. AwirecarryingacurrentIisplacedinaregionofuniformmagneticfieldB,asshowninthediagram.

B

I

L

ThedirectionofthefieldBisoutofthepageandthelengthofthewireisL.Whatiscorrectaboutthedirectionandmagnitudeoftheforceactingonthewire?

Direction Magnitude

A. equaltoBIL

B. smallerthanBIL

C. equaltoBIL

D. smallerthanBIL

M16/4/PHYSI/SPM/ENG/TZ0/XX– 15 –

Turn over

22. Amassconnectedtooneendofarigidrodrotatesatconstantspeedinaverticalplaneabouttheotherendoftherod.

rod

mass

Theforceexertedbytherodonthemassis

A. zeroeverywhere.

B. constantinmagnitude.

C. alwaysdirectedtowardsthecentre.

D. aminimumatthetopofthecircularpath.

23. PlanetXhasmassMandradiusR.PlanetYhasmass2Mandradius3R.ThegravitationalfieldstrengthatthesurfaceofplanetXisg.WhatisthegravitationalfieldstrengthatthesurfaceofplanetY?

A.29

g

B.23

g

C.32

g

D.92

g

M16/4/PHYSI/SPM/ENG/TZ0/XX– 16 –

24. Asimplemodelofanatomhasfiveenergylevels.Whatisthemaximumnumberofdifferentfrequenciesintheemissionspectrumofthatatom?

A. 4

B. 6

C. 10

D. 25

25. Whichofthefollowingisthecorrectdefinitionofthebindingenergyofanucleus?

A. Theproductofthebindingenergypernucleonandthenucleonnumber

B. Theminimumworkrequiredtocompletelyseparatethenucleonsfromeachother

C. Theenergythatkeepsthenucleustogether

D. Theenergyreleasedduringtheemissionofanalphaparticle

26. Whichofthefollowingliststhreefundamentalforcesinincreasingorderofstrength?

A. electromagnetic,gravity,strongnuclear

B. weaknuclear,gravity,strongnuclear

C. gravity,weaknuclear,electromagnetic

D. electromagnetic,strongnuclear,gravity

27. Forwhichreasonwerequarksfirstintroduced?

A. Toexplaintheexistenceofisotopes

B. Todescribenuclearemissionandabsorptionspectra

C. Toaccountforpatternsinpropertiesofelementaryparticles

D. Toaccountforthemissingenergyandmomentuminbetadecay

M16/4/PHYSI/SPM/ENG/TZ0/XX– 17 –

28. Asolarpanelhassurfacearea0.40m2andefficiency50%.Theaverageintensityofradiationreachingthesurfaceofthepanelis0.25kWm–2.Whatistheaveragepoweroutputfromanarrayof10ofthesesolarpanels?

A. 0.5W

B. 5W

C. 50W

D. 500W

29. Whatisthecorrectorderofenergytransformationsinacoalpowerstation?

A. thermal → chemical → kinetic → electrical

B. chemical → thermal → kinetic → electrical

C. chemical → kinetic → thermal → electrical

D. kinetic → chemical → electrical → thermal

30. Ablackbodyofsurface1.0m2emitselectromagneticradiationofpeakwavelength2.90× 10–6m.Whichofthefollowingstatementsaboutthebodyarecorrect?

I. Thetemperatureofthebodyis1000K.

II. Theenergyradiatedbythebodyinonesecondis5.7× 104J.

III. Thebodyisaperfectabsorberofelectromagneticradiation.

A. IandIIonly

B. IandIIIonly

C. IIandIIIonly

D. I,IIandIII