Chapter 01: Radiation and Its Discovery
Fauber: Radiographic Imaging and Exposure, 6th Edition
MULTIPLE CHOICE
1. When were x-rays discovered?
a. October 8, 1985
b. November 8, 1895
c. January 23, 1896
d. August 15, 1902
ANS: B
X-rays were discovered by Wilhelm Conrad Roentgen on November 8, 1895.
2. What type of tube was Roentgen working with in his lab when x-rays were discovered?
a. Crookes tube
b. Fluorescent tube
c. High-vacuum tube
d. Wurzburg tube
ANS: A
Roentgen was working with a low-vacuum tube known as a Crookes tube.
3. Which of the following terms could be defined as the instantaneous production of light
only during an interaction between a type of energy and some element or compound?
a. Phosphorescence
b. Afterglow
c. Glowing
d. Fluorescence
ANS: D
Fluorescence is the instantaneous emission of light from a material due to the interaction
with some type of energy.
4. Barium platinocyanide was the:
a. type of dark paper Roentgen used to darken his laboratory.
b. material Roentgen used to produce the first radiograph of his wife’s hand.
c. metal used to produce the low-vacuum tube.
d. fluorescent material that glowed when the tube was energized.
ANS: D
A piece of paper coated with barium platinocyanide glowed each time Roentgen energized
his tube.
5. The first radiograph produced by Roentgen, of his wife’s hand, required an exposure time
of:
a. 15 s.
b. 150 s.
c. 15 min.
d. 150 min.
, ANS: C
It took a 15-min exposure time to produce the first radiograph.
6. The letter x in x-ray is the symbol for:
a. electricity.
b. the unknown.
c. penetrating.
d. discovery.
ANS: B
The letter x represents the mathematical symbol of the unknown.
7. The first Nobel Prize for physics was received in 1901 by:
a. Marie Curie.
b. William Crookes.
c. Wilhelm Roentgen.
d. Albert Einstein.
ANS: C
Wilhelm Roentgen received the first Nobel Prize for physics in 1901.
8. X-rays were at one time called:
a. Becquerel rays.
b. Roentgen rays.
c. Z-rays.
d. gamma rays.
ANS: B
X-rays were at one time called Roentgen rays.
9. Erythema, an early sign of biologic damage due to x-ray exposure, is:
a. reddening of the skin.
b. a malignant tumor.
c. a chromosomal change.
d. one of the most serious effects of x-ray exposure.
ANS: A
Erythema is reddening and burning of the skin, an early and less serious effect of exposure
to large doses of x-radiation.
10. X-rays have which of the following properties?
a. Electrical and magnetic
b. Electrical and chemical
c. Magnetic and chemical
d. All options are correct.
ANS: A
X-rays, a type of electromagnetic radiation, have both electrical and magnetic properties.
11. The distance between two successive crests of a sine wave is known as:
a. an angstrom.
b. frequency.
Fauber: Radiographic Imaging and Exposure, 6th Edition
MULTIPLE CHOICE
1. When were x-rays discovered?
a. October 8, 1985
b. November 8, 1895
c. January 23, 1896
d. August 15, 1902
ANS: B
X-rays were discovered by Wilhelm Conrad Roentgen on November 8, 1895.
2. What type of tube was Roentgen working with in his lab when x-rays were discovered?
a. Crookes tube
b. Fluorescent tube
c. High-vacuum tube
d. Wurzburg tube
ANS: A
Roentgen was working with a low-vacuum tube known as a Crookes tube.
3. Which of the following terms could be defined as the instantaneous production of light
only during an interaction between a type of energy and some element or compound?
a. Phosphorescence
b. Afterglow
c. Glowing
d. Fluorescence
ANS: D
Fluorescence is the instantaneous emission of light from a material due to the interaction
with some type of energy.
4. Barium platinocyanide was the:
a. type of dark paper Roentgen used to darken his laboratory.
b. material Roentgen used to produce the first radiograph of his wife’s hand.
c. metal used to produce the low-vacuum tube.
d. fluorescent material that glowed when the tube was energized.
ANS: D
A piece of paper coated with barium platinocyanide glowed each time Roentgen energized
his tube.
5. The first radiograph produced by Roentgen, of his wife’s hand, required an exposure time
of:
a. 15 s.
b. 150 s.
c. 15 min.
d. 150 min.
, ANS: C
It took a 15-min exposure time to produce the first radiograph.
6. The letter x in x-ray is the symbol for:
a. electricity.
b. the unknown.
c. penetrating.
d. discovery.
ANS: B
The letter x represents the mathematical symbol of the unknown.
7. The first Nobel Prize for physics was received in 1901 by:
a. Marie Curie.
b. William Crookes.
c. Wilhelm Roentgen.
d. Albert Einstein.
ANS: C
Wilhelm Roentgen received the first Nobel Prize for physics in 1901.
8. X-rays were at one time called:
a. Becquerel rays.
b. Roentgen rays.
c. Z-rays.
d. gamma rays.
ANS: B
X-rays were at one time called Roentgen rays.
9. Erythema, an early sign of biologic damage due to x-ray exposure, is:
a. reddening of the skin.
b. a malignant tumor.
c. a chromosomal change.
d. one of the most serious effects of x-ray exposure.
ANS: A
Erythema is reddening and burning of the skin, an early and less serious effect of exposure
to large doses of x-radiation.
10. X-rays have which of the following properties?
a. Electrical and magnetic
b. Electrical and chemical
c. Magnetic and chemical
d. All options are correct.
ANS: A
X-rays, a type of electromagnetic radiation, have both electrical and magnetic properties.
11. The distance between two successive crests of a sine wave is known as:
a. an angstrom.
b. frequency.
