, Chapter 01: Radiation Physics
C C C
MULTIPLEC CHOICE
1. TheCfundamentalCunitCofCmatterCisCthe
a. proton.
b. neutron.
c. electron.
d. atom.
ANS:C D
ACprotonC isCaCsubatomicC particle;C theCfundamentalC unitC ofCmatterC isCtheCatom.C AC neutronC i
sCaCsubatomicCparticle;CtheCfundamentalCunitCofCmatterCisCtheCatom.CAnCelectronCisCaCsu
batomicCparticle;CtheCfundamentalCunitCofCmatterCisCtheCatom.CTheCfundamentalC unitCofC
matterCisCtheCatom.
DIF: Recall REF:CCC PageC8 OBJ:C 1
TOP:C CDA,CRHS,C III.B.2.C DescribeC theC characteristicsCofC x-radiation
MSC:C NBDHE,C 2.0C ObtainingC andC InterpretingC RadiographsC |C NBDHE,C 2.1C PrinciplesCofCradiophysi
csCandCradiobiology
2. TheCnucleusC ofCanCatomCcontains
a. protons.
b. neutrons.
c. protonsC andC neutrons.
d. electrons.
ANS:C C
TheCnucleusCofCanCatomCcontainsCneutronsCasCwellCasCprotons.CTheCnucleusCofCanCatom
Ccontains Cprotons Cas C well CasCneutrons.C TheCnucleusCofC anC atom Ccontains C protons C a
ndCneutrons.CTheCnucleusCofCanCatomCdoesCnotCcontainCelectrons;CitCcontainsCprotonsCa
ndCneutrons.
DIF: Recall REF:CCC PageC8 OBJ:C 2
TOP:C CDA,CRHS,C III.B.2.C DescribeC theC characteristicsCofC x-radiation
MSC:C NBDHE,C 2.0C ObtainingC andC InterpretingC RadiographsC |C NBDHE,C 2.1C PrinciplesCofCradiophysi
csCandCradiobiology
, 3. WhichC subatomicC particleCcarriesC aCnegativeCelectricalC charge?
a. ACneutron
b. ACproton
c. AnC electron
d. ACnucleon
ANS:C C
ACneutronC doesC notC carryC anC electricalC charge.C AC protonC carriesCaC positiveC electricalC charge.C
AnC electronC carriesCaCnegativeC electricalCcharge.C ACnucleonC carriesC aCpositiveC (proton)C or
noC (neutron)C electricalC charge.
DIF: Comprehension REF:CCC PageC8
OBJ:C2CTOP:C CDA,CRHS,CIII.B.2.CDescribeCtheC characteristicsCofCx-
radiation
MSC:C NBDHE,C 2.0C ObtainingC andC InterpretingC RadiographsC |C NBDHE,C 2.1C PrinciplesCofCradiophysi
csCandCradiobiology
4. WhichCofCtheC followingCelementsCisCtheCsimplestCatom?
a. HydrogenC (HC #1)
b. HeliumC(HeC #2)
c. NitrogenC (NC#7)
d. OxygenC (OC #8)
ANS:C A
AtomicCnumbersCareCassignedCfromCsimplestCtoCmostCcomplex.CHydrogenCisCtheCsimplest
Catom;CwithCaCsingleCproton,CitChasCanCatomicCnumberCofC1.CHeliumChasCanCatomicCnumbe
rCofC2.C NitrogenC hasCanCatomicCnumberCofC7.C OxygenC hasC anC atomicCnumberCofC8.
DIF: Comprehension REF:CCC PageC8
OBJ:C2CTOP:C CDA,CRHS,CIII.B.2.CDescribeCtheC characteristicsCofCx-
radiation
MSC:C NBDHE,C 2.0C ObtainingC andC InterpretingC RadiographsC |C NBDHE,C 2.1C PrinciplesC ofradiophysicsCandCradiobiology
, 5. WhichCofCtheCfollowingCstatementsCisCtrueC ofCorbitsC orCshellsCinCtheCatom?
a. ProtonsCtravelC aroundCtheCnucleusC inC well-
definedCshells.
b. AnC atomCcontainsC innumerableC shells.
c. TheCenergyC levelC withinCeachCshellC isCthe
same.
d. TheCorbitingC shellCclosestCtoCtheC nucleus
hasC theC highestCenergyClevel.
ANS:C D
ElectronsCtravelCaroundCtheCnucleusCinCwell-
definedCshells.CAnC atomCcontainsCaCmaximumCofCsevenCshells.CEachCofCtheCmaximumCseve
nCshellsCwithinCanCatomCrepresentsCaCdifferentCenergyClevel.CTheCorbitingCshellCclosestCtoCth
eCnucleusChasCtheChighestCenergyClevel.CTheCKCshellCisCtheCorbitingCshellC closestCtoCtheCnuc
leus.
DIF: Comprehension REF:CCC PageC8
OBJ:C2CTOP:C CDA,CRHS,CIII.B.2.CDescribeCtheC characteristicsCofCx-
radiation
MSC:C NBDHE,C 2.0C ObtainingC andC InterpretingC RadiographsC |C NBDHE,C 2.1C PrinciplesCofCradiophysi
csCandCradiobiology
6. TheCbindingCenergyCorCbindingCforceCofCanCelectronCis
a. determinedC byCtheCdistanceCbetweenC the
neutronsC andC protonsC withinC theC nucleus.
b. determinedC byCtheCdistanceCbetweenC the
orbitingC electronsC andC theCnucleus.
c. weakerCforC electronsClocatedC inCinner
shellsCthanC inCouterCshells.
d. determinedC byCtheC atomicC number.
ANS:C B
TheC bindingC energyC orC bindingC forceC ofC anC electronC isC determinedC byC theC distanceC betwee
nCtheCnucleusC andCtheC orbitingC electron.C TheCbindingC energyC orCbindingC forceCofC anC electro
nCisCdeterminedCbyCtheCdistanceCbetweenCtheCorbitingCelectronCandCtheCnucleus,CnotCtheCdist
anceCbetweenCtheCorbitingCelectrons.CTheCbindingCenergyCorCbindingCforceC ofC anCelectronC
isCstrongerC forC electronsC locatedC inCinnerCshellsCthanC forC outerCshells.
DIF: Recall REF:CCC PageC8 OBJ:CCC 2 TOP:C CDA,CN/A
MSC:C NBDHE,C 2.0C ObtainingC andC InterpretingC RadiographsC |C NBDHE,C 2.1C PrinciplesC ofradiophysicsCandCradiobiology
C C C
MULTIPLEC CHOICE
1. TheCfundamentalCunitCofCmatterCisCthe
a. proton.
b. neutron.
c. electron.
d. atom.
ANS:C D
ACprotonC isCaCsubatomicC particle;C theCfundamentalC unitC ofCmatterC isCtheCatom.C AC neutronC i
sCaCsubatomicCparticle;CtheCfundamentalCunitCofCmatterCisCtheCatom.CAnCelectronCisCaCsu
batomicCparticle;CtheCfundamentalCunitCofCmatterCisCtheCatom.CTheCfundamentalC unitCofC
matterCisCtheCatom.
DIF: Recall REF:CCC PageC8 OBJ:C 1
TOP:C CDA,CRHS,C III.B.2.C DescribeC theC characteristicsCofC x-radiation
MSC:C NBDHE,C 2.0C ObtainingC andC InterpretingC RadiographsC |C NBDHE,C 2.1C PrinciplesCofCradiophysi
csCandCradiobiology
2. TheCnucleusC ofCanCatomCcontains
a. protons.
b. neutrons.
c. protonsC andC neutrons.
d. electrons.
ANS:C C
TheCnucleusCofCanCatomCcontainsCneutronsCasCwellCasCprotons.CTheCnucleusCofCanCatom
Ccontains Cprotons Cas C well CasCneutrons.C TheCnucleusCofC anC atom Ccontains C protons C a
ndCneutrons.CTheCnucleusCofCanCatomCdoesCnotCcontainCelectrons;CitCcontainsCprotonsCa
ndCneutrons.
DIF: Recall REF:CCC PageC8 OBJ:C 2
TOP:C CDA,CRHS,C III.B.2.C DescribeC theC characteristicsCofC x-radiation
MSC:C NBDHE,C 2.0C ObtainingC andC InterpretingC RadiographsC |C NBDHE,C 2.1C PrinciplesCofCradiophysi
csCandCradiobiology
, 3. WhichC subatomicC particleCcarriesC aCnegativeCelectricalC charge?
a. ACneutron
b. ACproton
c. AnC electron
d. ACnucleon
ANS:C C
ACneutronC doesC notC carryC anC electricalC charge.C AC protonC carriesCaC positiveC electricalC charge.C
AnC electronC carriesCaCnegativeC electricalCcharge.C ACnucleonC carriesC aCpositiveC (proton)C or
noC (neutron)C electricalC charge.
DIF: Comprehension REF:CCC PageC8
OBJ:C2CTOP:C CDA,CRHS,CIII.B.2.CDescribeCtheC characteristicsCofCx-
radiation
MSC:C NBDHE,C 2.0C ObtainingC andC InterpretingC RadiographsC |C NBDHE,C 2.1C PrinciplesCofCradiophysi
csCandCradiobiology
4. WhichCofCtheC followingCelementsCisCtheCsimplestCatom?
a. HydrogenC (HC #1)
b. HeliumC(HeC #2)
c. NitrogenC (NC#7)
d. OxygenC (OC #8)
ANS:C A
AtomicCnumbersCareCassignedCfromCsimplestCtoCmostCcomplex.CHydrogenCisCtheCsimplest
Catom;CwithCaCsingleCproton,CitChasCanCatomicCnumberCofC1.CHeliumChasCanCatomicCnumbe
rCofC2.C NitrogenC hasCanCatomicCnumberCofC7.C OxygenC hasC anC atomicCnumberCofC8.
DIF: Comprehension REF:CCC PageC8
OBJ:C2CTOP:C CDA,CRHS,CIII.B.2.CDescribeCtheC characteristicsCofCx-
radiation
MSC:C NBDHE,C 2.0C ObtainingC andC InterpretingC RadiographsC |C NBDHE,C 2.1C PrinciplesC ofradiophysicsCandCradiobiology
, 5. WhichCofCtheCfollowingCstatementsCisCtrueC ofCorbitsC orCshellsCinCtheCatom?
a. ProtonsCtravelC aroundCtheCnucleusC inC well-
definedCshells.
b. AnC atomCcontainsC innumerableC shells.
c. TheCenergyC levelC withinCeachCshellC isCthe
same.
d. TheCorbitingC shellCclosestCtoCtheC nucleus
hasC theC highestCenergyClevel.
ANS:C D
ElectronsCtravelCaroundCtheCnucleusCinCwell-
definedCshells.CAnC atomCcontainsCaCmaximumCofCsevenCshells.CEachCofCtheCmaximumCseve
nCshellsCwithinCanCatomCrepresentsCaCdifferentCenergyClevel.CTheCorbitingCshellCclosestCtoCth
eCnucleusChasCtheChighestCenergyClevel.CTheCKCshellCisCtheCorbitingCshellC closestCtoCtheCnuc
leus.
DIF: Comprehension REF:CCC PageC8
OBJ:C2CTOP:C CDA,CRHS,CIII.B.2.CDescribeCtheC characteristicsCofCx-
radiation
MSC:C NBDHE,C 2.0C ObtainingC andC InterpretingC RadiographsC |C NBDHE,C 2.1C PrinciplesCofCradiophysi
csCandCradiobiology
6. TheCbindingCenergyCorCbindingCforceCofCanCelectronCis
a. determinedC byCtheCdistanceCbetweenC the
neutronsC andC protonsC withinC theC nucleus.
b. determinedC byCtheCdistanceCbetweenC the
orbitingC electronsC andC theCnucleus.
c. weakerCforC electronsClocatedC inCinner
shellsCthanC inCouterCshells.
d. determinedC byCtheC atomicC number.
ANS:C B
TheC bindingC energyC orC bindingC forceC ofC anC electronC isC determinedC byC theC distanceC betwee
nCtheCnucleusC andCtheC orbitingC electron.C TheCbindingC energyC orCbindingC forceCofC anC electro
nCisCdeterminedCbyCtheCdistanceCbetweenCtheCorbitingCelectronCandCtheCnucleus,CnotCtheCdist
anceCbetweenCtheCorbitingCelectrons.CTheCbindingCenergyCorCbindingCforceC ofC anCelectronC
isCstrongerC forC electronsC locatedC inCinnerCshellsCthanC forC outerCshells.
DIF: Recall REF:CCC PageC8 OBJ:CCC 2 TOP:C CDA,CN/A
MSC:C NBDHE,C 2.0C ObtainingC andC InterpretingC RadiographsC |C NBDHE,C 2.1C PrinciplesC ofradiophysicsCandCradiobiology
