1. When jwere jX-rays j discovered?
a. October j8, j1985
b. November j8, j1895
c. January j23, j1896
d. August j15, j1902
CORRECT jANSWER: jB
X-rays j were jdiscovered jby jWilhelm jConrad jRoentgen jon jNovember j8, j1895.
REFFERENCE: jp.1
2. What jtype jof jtube jwas jRoentgen jworking jwith jin jhis jlab jwhen jX-rays j were jdiscovered?
a. Crookes jtube
b. Fluorescent jtube
c. High-vacuum jtube
d. Wurzburg jtube
CORRECT jANSWER: jA
Roentgen jwas jworking jwith ja jlow-vacuum jtube jknown jas ja jCrookes jtube.
REFFERENCE: jp.2
3. Which jof jthe jfollowing jterms jcould jbe jdefined jas jthe jinstantaneous jproduction jof jlight
jonlyjduring jan jinteraction jbetween ja jtype jof jenergy jand jsome jelement jor jcompound?
a. Phosphorescence
b. Afterglow
c. Glowing
d. Fluorescence
CORRECT jANSWER: jD
Fluorescence jis jthe jinstantaneous jemission jof jlight jfrom ja jmaterial jdue jto jthe jinteraction
jwithjsome jtype jof jenergy.
REFFERENCE: jp.2
4. Barium jplatinocyanide jwas jthe:
a. type jof jdark jpaper jRoentgen jused jto jdarken jhis jlaboratory.
b. material jRoentgen jused jto jproduce jthe jfirst jradiograph jof jhis jwife’s jhand.
c. metal jused jto jproduce jthe jlow-vacuum jtube.
d. fluorescent jmaterial jthat jglowed jwhen jthe jtube jwas jenergized.
, 5. The jfirst jradiograph jproduced jby jRoentgen, jof jhis jwife’s jhand, jrequired jan jexposure jtime jof:
a. 15 js.
b. j 150 js.
c. 15 jmin.
d. 150 jmin.
ANS: C
It jtook ja j15-min jexposure jtime jto jproduce jthe jfirst jradiograph.
REFFERENCE: jp.3
6. The jletter jx jin jx-ray jis jthe jsymbol jfor:
a. electricity.
b. the junknown.
c. penetrating.
d. discovery.
ANS: B
The jletter jx jrepresents jthe jmathematical jsymbol jof jthe junknown.
REFFERENCE: jp.3
7. The jfirst jNobel jPrize jfor jphysics jwas jreceived jin j1901 jby:
a. Marie jCurie.
b. William jCrookes.
c. Wilhelm jRoentgen.
d. Albert jEinstein.
ANS: C
Wilhelm jRoentgen jreceived jthe jfirst jNobel jPrize jfor jphysics jin j1901.
REFFERENCE: jp.4
8. X-rays j were jat jone jtime jcalled:
a. Becquerel jrays.
b. Roentgen jrays.
c. Z-rays.
d. none jof jthe jabove.
ANS: B
X-rays j were jat jone jtime jcalled jRoentgen jrays.
REFFERENCE: jp.4
9. Erythema, jan jearly jsign jof jbiologic jdamage jdue jto jx-ray jexposure, jis:
a. reddening jof jthe jskin.
b. a jmalignant jtumor.
c. a jchromosomal jchange.
d. one jof jthe jmost jserious jeffects jof jx-ray jexposure.
ANS: A
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