RADIATION PROTECTION IN MEDICAL
RADIOGRAPHY BY SHERER COMPREHENSIVE
SOLVED QUESTIONS AND COMPLETE
ANSWERS
◉ Terrestrial radiation includes which of the following sources?
a. Long-lived radioactive elements such as uranium-238, radium-
226, and
thorium-232 that are present in variable quantities in the crust of
the earth
b. Radioactive fallout from nuclear weapons tests in which
detonation occurred
above ground
c. The sun and beyond the solar system
d. Airport surveillance systems and electron microscopes.
Answer: A
◉ When exposed to high radon levels in the home, which of the
following groups of people have the highest risk of developing lung
cancer?
a. Teenagers
b. Adults from 20 to 30 years of age
,c. Nonsmokers
d. Smokers.
Answer: D
◉ In the electromagnetic spectrum, higher frequencies are
associated with
a. longer wavelengths and lower energies.
b. longer wavelengths and higher energies.
c. shorter wavelengths and lower energies.
d. shorter wavelengths and higher energies..
Answer: D
◉ Which of the following radiation quantities use the same unit of
measure?
1. Effective dose and equivalent dose
2. Exposure and effective dose
3. Absorbed dose and equivalent dose.
Answer: 1 ONLY
◉ The first decay product of radium is
a. cesium.
b. radon.
,c. strontium.
d. x-ray..
Answer: B
◉ The mass of an alpha particle is approximately
a. two times the mass of a hydrogen atom and a negative charge of
minus 2.
b. four times the mass of a hydrogen atom and a positive charge
twice that of an
electron.
c. six times the mass of a hydrogen atom and a negative charge of
minus 1.
d. eight times the mass of a hydrogen atom and a positive charge
four times that of
an electron..
Answer: B
◉ Which of the following sources of radiation is manmade?
1. Atmospheric fallout from nuclear weapons testing
2. Cosmic radiation from the sun and beyond the solar system
3. Nuclear power plant accidents as a consequence of natural
disasters
a. 1 and 2 only
, b. 1 and 3 only
c. 2 and 3 only
d. 1, 2, and 3.
Answer: B
◉ Particles associated with electromagnetic radiation that have
neither mass nor electric charge are
a. ions.
b. negatrons.
c. positrons.
d. x-ray photons..
Answer: D
◉ Which of the following is not a type of interaction between x-
radiation and biologic matter?
a. Compton scattering
b. Bremsstrahlung
c. Pair production
d. Photoelectric absorption.
Answer: B
RADIOGRAPHY BY SHERER COMPREHENSIVE
SOLVED QUESTIONS AND COMPLETE
ANSWERS
◉ Terrestrial radiation includes which of the following sources?
a. Long-lived radioactive elements such as uranium-238, radium-
226, and
thorium-232 that are present in variable quantities in the crust of
the earth
b. Radioactive fallout from nuclear weapons tests in which
detonation occurred
above ground
c. The sun and beyond the solar system
d. Airport surveillance systems and electron microscopes.
Answer: A
◉ When exposed to high radon levels in the home, which of the
following groups of people have the highest risk of developing lung
cancer?
a. Teenagers
b. Adults from 20 to 30 years of age
,c. Nonsmokers
d. Smokers.
Answer: D
◉ In the electromagnetic spectrum, higher frequencies are
associated with
a. longer wavelengths and lower energies.
b. longer wavelengths and higher energies.
c. shorter wavelengths and lower energies.
d. shorter wavelengths and higher energies..
Answer: D
◉ Which of the following radiation quantities use the same unit of
measure?
1. Effective dose and equivalent dose
2. Exposure and effective dose
3. Absorbed dose and equivalent dose.
Answer: 1 ONLY
◉ The first decay product of radium is
a. cesium.
b. radon.
,c. strontium.
d. x-ray..
Answer: B
◉ The mass of an alpha particle is approximately
a. two times the mass of a hydrogen atom and a negative charge of
minus 2.
b. four times the mass of a hydrogen atom and a positive charge
twice that of an
electron.
c. six times the mass of a hydrogen atom and a negative charge of
minus 1.
d. eight times the mass of a hydrogen atom and a positive charge
four times that of
an electron..
Answer: B
◉ Which of the following sources of radiation is manmade?
1. Atmospheric fallout from nuclear weapons testing
2. Cosmic radiation from the sun and beyond the solar system
3. Nuclear power plant accidents as a consequence of natural
disasters
a. 1 and 2 only
, b. 1 and 3 only
c. 2 and 3 only
d. 1, 2, and 3.
Answer: B
◉ Particles associated with electromagnetic radiation that have
neither mass nor electric charge are
a. ions.
b. negatrons.
c. positrons.
d. x-ray photons..
Answer: D
◉ Which of the following is not a type of interaction between x-
radiation and biologic matter?
a. Compton scattering
b. Bremsstrahlung
c. Pair production
d. Photoelectric absorption.
Answer: B
