原子物理智慧树知到答案2024年南开大学

原子物理南开大学智慧树知到答案2024年第一章测试

Theenergyscaleofatomis(

).

A:

GeVB:MeVC:

eVD:

TeV

答案:CThedensityscaleofatomis(

)

A:

B:C:D:

答案:BWhodidproposethatthematterwasindivisibleinancientGreece?(

)

A:DemocracyB:PlatoC:AristotleD:Archimedes

答案:A

WhodidfirstlyshowthePeriodictable?

(

)

A:Faraday

B:ProustC:Avogadro

D:Mendeleev

答案:D

Howmanyelementsarediscoveredupto2019?(

)

A:118B:115C:117D:112

答案:AWhatwasfoundbyRoentgenin1895?(

)

A:Xray

B:Proton

C:neutronD:Electron

答案:AThelawofblack-bodyradiationwasgivenin1900by(

)?

A:RutherfordB:PlankC:BoltzmannD:Bohr

答案:BWhichmodelcanexactlysolvetheHydrogensystem?(

)

A:SchrodingerequationB:Rutherfordmodel

C:Diracequation

D:Bohrmodel

答案:CWhichfieldisnotrelatedtoatomicphysics?(

)

A:LiteratureB:EnvironmentC:Plasmaphysics

D:Astrophysics

答案:A

WhodidnotjointheSolvayconferenceheldin1927?(

)

A:Pauli

B:EinsteinC:SchrodingerD:Fermi

答案:D

第二章测试

StatethemassofAvogadro’snumberofatomsforCopper(

).

A:127.10gB:63.55g

C:63.55kgD:23.22g

答案:B

A:B:

C:

D:

答案:CThemassofaprotonis(

)

A:

B:

C:

D:

答案:AInRutherfordatomicmodelalphaparticleswerestrokedon

(

)

A:titaniumB:silverC:gold

D:aluminum

答案:CForaluminum(Z

=13)andgold(Z

=79)targets,whatistheratioofαparticlescatteringatanyangleforequalnumbersofscatteringnucleiperunitarea?(

)

A:36.93B:134.5C:1.47

D:0.03

答案:AForan8.0MeVαparticlescatteringfromagoldatom(Z=79)ofradius0.135nm,thelargestscatteringangle,θis?(

)

A:B:C:

D:

答案:CAccordingtostructureofatomelectronshouldfallin(

)?

A:shell

B:outerenvironmentC:nucleusD:space

答案:CWhichofthefollowingisnotavalidconclusionfromRutherford’salphaparticlescatteringexperiment?(

)

A:Thenucleusmustbepositivelycharged

B:Theatomismainlyemptyspace

C:Themassoftheatomismostlyconcentratedinthenucleus

D:Thenucleusmustbeverysmallcomparedtotheatom

答案:A

A:

8°B:12°C:15°D:10°

答案:D

A:1.35

B:0.67

C:0.05

D:0.84

答案:D

第三章测试

Whenanelectronjumpsfromitsorbittoanotherorbit,energyis(

).

A:absorbed

B:bothC:emitted

D:noeffect

答案:B

Whatdeterminesthedifferenceinenergybetweentwoenergylevels?(

)

A:distancebetweenthetwoenergylevelsB:numberofvalenceelectronsC:numberofelectronsintheenergylevels

D:distancefromthenucleus

答案:AAccordingtoBohrmodelofhydrogenatom,theradiusofstationaryobitcharacterizedbytheprincipalquantumnumbernisproportional(

)

A:

n

B:C:1/nD:

答案:BInhydrogenatomtheangularmomentumoftheelectroninthelowestenergystate

(

)

A:

B:

C:

D:

答案:BTheratioofthespeedoftheelectroninthegroundstateofhydrogenatomtothespeedoflightis

(

)

A:2/137B:1/2C:1/137

D:1/237

答案:CIftheelectroninhydrogenatomjumpsfromthethirdorbittosecondorbit,thewavelengthofthemittedradiationisgivenby(

)

A:5/R

B:36/5RC:5R/36D:R/6

答案:BAprotonandanelectron,bothatrestinitially,combinetoformahydrogenatominthegroundstate.Asinglephotonisemittedinthisprocess.Whatisitswavelength?(

)

A:357nmB:15mmC:91.2nmD:49fm

答案:CAbeamofelectronsbombardsasampleofhydrogen.ThroughwhatpotentialdifferencemusttheelectronshavebeenacceleratedifthefirstlineoftheBalmerseriesistobeemitted?(

)

A:12.1V

B:35.7V

C:0.6VD:569.3V

答案:AThelongestwavelengthintheLymanseriesis121.5nmandtheshortestwavelengthintheBalmerseriesis364.6nm.Findthelongestwavelengthoflightthatcouldionizehydrogen.(

)

A:74.5mmB:49.4fmC:8.3nmD:91.13nm

答案:DWhatistheshortestwavelengthpresentintheBrackettseriesofspectrallines?(

)

A:569.34nmB:327.89nmC:1.46mmD:91.13nm

答案:C

第四章测试

A:12.89eVB:7.13eV

C:

D:2.08eV

答案:DUltravioletlightofwavelength350nmandintensity

isdirectedatapotassiumsurface.Themaximumkineticenergyofthephotoelectronsis(

)

A:3.5eVB:6.9eVC:D:17.6eV

答案:AAmetalsurfaceilluminatedbyHzlightemitselectronswhosemaximumenergyis0.52eV.Thesamesurfaceilluminatedby

Hzlightemitselectronswhosemaximumenergyis1.97eV.Theworkfunctionofthemetalis(

)

A:3.0eV

B:47.5eVC:12.4eV

D:7.2eV

答案:AThedeBrogliewavelengthsofa46ggolfballwithavelocityof30m/sis(

)

A:B:C:D:

答案:DThekineticenergyofaprotonwhosedeBrogliewavelengthis1.0fmis

(

)

A:347MeVB:1.555GeV

C:938MeV

D:617MeV

答案:DTheexperimentthatconfirmstheexistenceofdeBrogliewavesis(

)

A:Davisson-Germerexperiment

B:Geiger-MarsdenexperimentC:J.J.ThomsonExperiment

D:Millikanexperiment

答案:A

A:578nm

B:4.26m

C:3.15km

D:93.6mm

答案:CTheexpectationvalue<x>ofthepositionofaparticletrappedinaboxLwideofinfinitewellis(

)

A:

B:

L

C:0

D:L/2

答案:DTheaveragevalueof1/rfora1selectroninthehydrogenatomis(

)

A:

B:

C:

D:

答案:C

A:

B:

C:D:

答案:A

第五章测试

Anelectronwhoseorbitalquantumnumberis2hasthelengthofangularmomentum(

).

A:

B:C:D:

答案:DForahydrogenatominthe6fstate,theminimumanglebetweentheorbitalangularmomentumvectorandthezaxisis(

)

A:

B:

C:

D:

答案:D

A:

B:

C:

D:

答案:CAnexperimenterwantstoseparatesilveratomsinaStern-Gerlachexperimentbyatleast1cm(alargeseparation)astheyexitthemagneticfield.Toheatthesilver,shehasanoventhatcanreach1000°Candneedstoorderasuitablemagnet.Whatshouldbethemagnetspecifications?(

)

A:75T·m

B:24T·mC:57T·m

D:39T·m

答案:CTheLandefactorof

is(

)

A:2B:1

C:3D:0.67

答案:A

A:1.1nm

B:1.2nmC:0.6nm

D:1.8nm

答案:BTheBohrmagnetonis(

)

A:

B:C:

D:

答案:CAsampleofacertainelementisplacedina0.300Tmagneticfieldandsuitablyexcited.HowfarapartaretheZeemancomponentsofthe450nmspectrallineofthiselement?

(

)

A:3.72fm

B:1.45nm

C:2.83pm

D:6.94nm

答案:CInanomalousZeemaneffect,alevelofgive,s,l,jsplitsinto(

)

A:0or2j+1levels

B:2j+1levels

C:2s+1levels

D:2l+1levels

答案:AAnatomwiththestatesisplacedinaweakmagneticfield.Howmanytransitionscanbeobserved?(

)

A:12

B:35

C:20

D:30

答案:D

第六章测试

Thetotalspinoftwoelectronsis(

).

A:1

B:1or0C:0

D:1/2

答案:BThemaximumvalueoftotalangularmomentumforelectronwithl=4(

)

A:0B:4C:3.5D:4.5

答案:DThenumberofvaluesallowedtototalangularmomentumjinHeliumatomforagivennon-zerolare

(

)

A:3

B:0C:1

D:2

答案:AThe3sstateofNahasanenergyof-5.14eV.Itseffectivenuclearchargeis(

)

A:1.14eB:5eC:1e

D:11e

答案:AThegroundstateofcarbonis(

)

A:B:

C:

D:

答案:C

Asystemofelectronsisdescribedbyawavefunctionshouldbe(

)

A:trial

B:symmetric

C:norequirementD:anti-symmetric

答案:DTheelectronconfigurationofNeonis

(

)

A:

B:

C:

D:

答案:D

A:20B:10C:5D:15

答案:AWhatatomshavetheconfiguration(

)

A:

Si

B:

AlC:MgD:Na

答案:CHowmanyelectronscanbecontainedinMshell(

)

A:20

B:8C:2

D:18

答案:D

第七章测试

WhodiscoveredtheXray(

).

A:Rontgen

B:Einstein

C:Nobel

D:Bohr

答案:AIfwehaveatungstenanode(workfunction

f=4.63eV)andelectron

accelerationvoltageof35kV,whatistheminimumwavelengthofthexrays?(

)

A:3.12pm

B:

0.0354nm

C:3.89nm

D:4.58fm

答案:AThecontinuumspectrumofXraycomesfrom

(

)

A:Augerelectron

B:BremsstrahlungC:Photoelectriceffect

D:Pairproduction

答案:BAphotonhaving40keVscattersfromafreeelectronatrest.Whatisthemaximumenergythattheelectroncanobtain?(

)

A:7.95eV

B:1.73eVC:5.41eV

D:

4.32eV

答案:CAphotonofwavelength2.0nmCompton-scattersfromanelectronatanangleof90°.Whatisthemodifiedwavelength?(

)

A:

2.00243nm

B:7.67945nm

C:5.56730nm

D:9.45891nm

答案:AThemomentumofphotonscorrespondingtotheminimumwavelengthemittedfromx-raytubewhoseoperatingvoltageis120kVis(

)

A:

B:

C:

D:

答案:BAnX-raytubeoperatesat100kV.Themaximumspeedofelectronsstrikingtheanticathodeis(

)

A:

B:

C:

D:

答案:AIftheK,L,andMenergylevelsofPtare78000eV,12000eVand30000eV,respectively,linefromPtis

(

)

A:14.3pm

B:92.6pm

C:18.6pm

D:43.6pm

答案:CWhentheatomicnumberoftheanticathodeis79,

lineis

(

)

A:

B:

C:

D:

答案:CInZntheionizationenergyofKshellis9.659KeVandLshell1.021KeV.ThekineticenergyoftheAugerelectronemittedfromtheLshellis(

)

A:7.62KeV

B:1.02KeV

C:8.638KeV

D:4.579KeV

答案:A

第八章测试

A:0.5nmB:134.7nm

C:1.3nmD:20.8nm

答案:DThroughwhatangleisa4MeVaparticlescatteredwhenitapproachesagoldnucleuswithaimpactparameterof

?(

)

A:

B:

C:D:

答案:DTheenergyofahydrogenatominthefirstexcitedstateis

(

)

A:-1.51eV

B:-13.6eV

C:-3.4eVD:-0.85eV