FinalExaminationofPhysicsIIfor2009MixedClass普通物理学真题试卷试题

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1、浙江大学2010-2011学年秋冬学期《普通物理学II》课程期末考试试卷课程号：061R0070_，开课学院：__理学院___考试试卷：√A卷、B卷（请在选定项上打√）考试形式：√闭、开卷（请在选定项上打√），允许带_计算器_入场考试日期：2011年01月17日,考试时间：120分钟诚信考试，沉着应考，杜绝违纪。考生姓名：学号：所属院系：_题序IIIIII-1III-2III-3III-4总分得分评卷人Physicalconstants:e0=8.85´10-12C2/N·m2;m0=4p´10-7T·m/A,e=1.6´10-19C,me=9.11´10-31kg，h=6.63´10-3

2、4J·sI.Fillinthespaceunderlined.(35%)1.Figure1showsaThomsonatommodelofhelium(He,Z=2).Twoelectrons,atrest,areembeddedinsideauniformsphereofpositivecharge2e.Thedistancedbetweentheelectronsissothattheconfigurationisinstaticequilibrium.2.Twolongwiresadistancebapartcarryantiparallelcurrentsi,asinFigure2

3、.ThemagneticinductionstrengthBatpointP,whichisequidistantfromthewires,isgivenby.3.ForthechargeconfigurationofFigure3,theelectricpotentialV(r)forpointsontheverticalaxis,assumingr>>disgivenby.SetV=0atinfinity.4.Abroadsourceoflight(l=680nm)illuminatesnormallytwoglassplates120mmlongthattouchatoneendan

4、dareseparatedbyawire0.048mmindiameterattheotherend(Fig.4).Howmanybrightfringesappearoverthe120-mmdistance?.5．Whatwouldbetheactionofaquarter-waveplate(l/4波片)onthelinearlypolarized(assumetheplaneofvibrationtobeat45ototheopticaxisoftheplate).6.ThedeBroglie’swavelengthofa1.00-KeVelectronisof.7.Station

5、arystateSchrödinger’sEquation(定态薛定谔方程)foronedimensionalsystemis:II.MultipleChoice(Choosealltheapply,20%)1.Whichofthefollowingdoesnotsignificantlycontributetothemagneticpropertiesofasubstance?(A)Orbitalmagneticmomentsofelectrons.(B)Spinmagneticmomentsofelectrons(C)Magneticmomentsofprotonsandneutron

6、s.(D)Allcontributeequally.2.Twoidealpolarizingsheetsarestackedsothatnoneoftheincidentunpolarizedlightistransmitted.Athirdpolarizingsheetisslippedbetweenthefirsttwosheetsatanangleof45otothebottomsheet.Thefractionoflighttransmittedthroughtheentirestackis:(A)1/2(B)1/4(C)1/8(D)Stillzero3.Thediffractio

7、npatternofasingleslitisobservedwithgreenlight.Thegreenlightisthenreplacedbyredlight.Whichofthefollowingchangeswillallowthelocationsofthediffractionminimaonthescreentoremainunaffectedbythechangeoflightcolor?(A)Inc