Exam (elaborations)
RS/REHS Exam Questions with Verified Answers Part 48
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RS/REHS exam questions and answers for practice and focused revision.
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Question 95Actual amounts of radiation exposure received in different parts of the world will vary with altitude, background and
medical practices.
a. True
b. False
True
Question 96
With dental x-rays, it is necessary to establish the correct exposure time for kilovoltage, milliamperage and source-
to-skin distance.
a. True
b. False
True
Question 97
It is believed by some researchers that the hazards of low level radiation may be worse than previously predicted,
supporting the principle that "x-rays should be used only when there is good medical reason."
a. True
b. False
True
Question 98
It is not necessary for a dental unit to have filters.
a. True
b. False
False
Question 1
The discoverer of X-rays was:
a. Crookes
b. Curie
c. Roentgen
d. Becquerel
Roentgen
Question 2
The term "radioactivity" was "coined" by
a. Wilheim Roentgen
b. Henri Becquerel
c. Henri Crookes
d. Marie and Pierre Curie
Marie and Pierre Curie
, Question 3
Which one of the following is not a part of particulate radiation?
a. Proton
b. Neutron
c. Electron
d. x-ray
x-ray
Question 4
All of the following are considered ionizing radiation except:
a. Gamma rays
b. Ultraviolet light
c. x-rays
d. beta particles
Ultraviolet light
Question 5
Resident of which of the following citied would probably receive the most cosmic radiation?
a. Lake Placid
b. Miami
c. Los Angeles
d. New York
Lake Placid
Question 6
Which one of the following is least penetrating?
a. Alpha rays
b. Beta rays
c. Gamma rays
d. x-rays
Alpha rays
Question 7
Which one of the following is most penetrating?
a. Alpha rays
b. Beta rays
c. Gamma rays
d. x-rays
Gamma rays
Question 8
Residents of which of the following cities would probably receive the most exposure from naturally occurring
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