人教版高中物理选修11高二上学期期中考试物理中美班试题无答案Word文档下载推荐.docx

人教版高中物理选修11高二上学期期中考试物理中美班试题无答案Word文档下载推荐.docx

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10-15eVs

speedoflight=3.00×

108ms-1

chargeonelectron=–1.60×

10-19C

massofelectron=9.11×

10-31kg

1、Alightbeaminairhitsasheetofcrownglassatanangleof30.0°

.Atwhatangleisthelightbeamrefracted?

（n2=1.52）

2、Anobjectisplaced32.0cmfromaconvexlensthathasafocallengthof8.0cm.

a.Whereistheimage?

b.Iftheobjectis3.0cmhigh,howtallistheimage?

c.Whatistheorientationoftheimage?

3、AphysicsteacherhasapparatustoshowYoung’sdoubleslitexperiment.TheapparatusisshowninFigurebelow,Thepatternofbrightanddarkbandsisobservedonthescreen.Whichoneofthefollowingactionswillincreasethedistance,∆x,betweendarkbandsinthisdoubleslitinterferencepattern?

A.decreasetheslitwidth

B.decreasetheslitseparation

C.decreasetheslitscreendistance

D.decreasethewavelengthofthelight

4、、Inanexperiment,monochromaticlaserlightofwavelength600nmshinesthroughanarrowslit,andtheintensityofthetransmittedlightisrecordedonthescreensomedistanceawayasshowninFigure2a.TheintensitypatternseenonthescreenisshowninFigure2b.

Whichoneoftheintensitypatterns（A－D）belowbestindicatesthepatternthatwouldbeseenifawiderslitwasused?

5、StudentshavesetupanexperimentsimilartothatofEnglishphysicistThomasYoung.Thestudents’experimentusesmicrowavesofwavelengthλ=2.8cminsteadoflight.ThebeamofmicrowavespassesthroughtwonarrowslitsshownasS1andS2inFigurebelow.Thestudentsmeasuretheintensityoftheresultingbeamatpointsalongthelineshownanddeterminethepositionsofmaximumintensity.TheseareshownasfilledcirclesandmarkedP0,P1...

Whatisthedifferenceinlength（S2P2－S1P2）whereP2isthesecondmaximumawayfromthecentralaxis.

6、Astep-uptransformerhas80turnsonitsprimarycoiland1200turnsonitssecondarycoil.Theprimarycircuitissuppliedwithanalternatingcurrentat120V.

a.Whatvoltageisbeingappliedacrossthesecondarycircuit?

b.Thecurrentinthesecondarycircuitis2.0A.Whatcurrentisintheprimarycircuit?

c.Whatarethepowerinputandoutputofthetransformer?

7、Acopperwireofinsignificantresistanceisplacedinthecenterofanairgapbetweentwomagneticpoles,asshowninFigurebelow.Thefieldisconfinedtothegapandhasastrengthof1.9T.

a.Determinetheforceonthewire（directionandmagnitude）whentheswitchisopen.

b.Determinetheforceonthewire（directionandmagnitude）whentheswitchisclosed.

c.Determinetheforceonthewire（directionandmagnitude）whentheswitchisclosedandthebatteryisreversed.

d.Determinetheforceonthewire（directionandmagnitude）whentheswitchisclosedandthewireisreplacedwithadifferentpiecehavingaresistanceof5.5Ω

8、Youobservecoloredringsonapuddleandconcludethattheremustbeanoilslickonthewater.Youlookdirectlydownonthepuddleandseeayellow–green（λ=555nm）region.Iftherefractiveindexofoilis1.45andthatofwateris1.33,whatistheminimumthicknessofoilthatcouldcausethiscolor?

9、Tworesistors,47.0Ωand82.0Ω,areconnectedinseriesacrossa45.0Vbattery.

a.Whatisthecurrentinthecircuit?

b.Whatisthevoltagedropacrosseachresistor?

c.Ifthe47.0Ωresistorisreplacedbya39.0Ωresistor,willthecurrentincrease,decrease,orremainthesame?

d.Whatisthenewvoltagedropacrossthe82.0Ωresistor?

10、RefertoFigurebelowtoanswerthefollowingquestions.

a.Whatshouldtheammeterreadingbe?

b.Howmuchpowerisdeliveredtotheresistor?

11、Thefollowingdiagramshowsaparticle,withinitialvelocityv,abouttoenterauniformmagneticfield,B,directedoutofthepage.

aWhattypeofparticlecouldfollowpathA?

bIntermsofF,whatwouldbethemagnitudeofthemagneticforceifthevelocityisdoubledandfieldstrengthremainsthesame?

12、Thefollowinginformationappliestoquestions2and3.Thediagramsbelowshowacurrentloopwithitsplaneparalleltothepage.

aWhatisthedirectionofthemagneticfieldinsidetheloopindiagram（a）?

bWhatisthedirectionofthemagneticfieldinsidetheloopofdiagram（b）?

13、InaMillikanoil-dropexperiment,adrophasbeenfoundtoweigh2.4×

10-14N.Theparallelplatesareseparatedbyadistanceof1.2cm.Whenthepotentialdifferencebetweentheplatesis450V,thedropissuspended,motionless.

a.Whatisthechargeontheoildrop?

b.Iftheupperplateispositive,howmanyexcesselectronsareontheoildrop?

14、Aphotocellusesasodiumcathode.Thesodiumcathodehasathresholdwavelengthof536nm.

a.FindtheworkfunctionofsodiumineV.

b.Ifultravioletradiationwithawavelengthof348nmfallsonsodium,whatistheenergyoftheejectedelectronsineV?

15、Anelectronisacceleratedbyapotentialdifferenceof75V.WhatisitsdeBrogliewavelength?

16、Thefollowingenergylevelsforatomichydrogenapplytoquestions1–4.

aCalculatethefrequencyofphotonsemittedwhenelectronsinatomichydrogenmakethetransitionfromthefirstexcitedstatetothegroundstate.

bWhatisthewavelengthoflightthatisemittedwhentheelectroninatomichydrogengoesfromthesecondexcitedstatetothegroundstate?

cWhatistheminimumenergy（ineV）requiredtoioniseahydrogenatomfromthegroundstate?