Registry Radiation Protection – Practice Questions & Answers

Primary protective barriers, if in the wall, must extend to a height of at least?

A. 10 feet
B. 5 feet
C. 6 feet
D. 7 feet


D


The average U.S. resident receives approximately _______ per year from indoor and outdoor levels of radon.

A. 1.0 mSv
B. 2.0 mSv
C. 3.0 mSv
D. 5 mSv


B

,Which statement is true concerning the properties of x-radiation?

A. X-rays are heterogeneous
B. X-rays can be focused by a lens
C. X-rays are affected by a magnetic field
D. X-rays travel at one-third the speed of light


A


Secondary protective barriers must extend to a height of?

A. 5 feet
B. 6 feet
C. 7 feet
D. 10 feet


C

,What is the intensity of scattered radiation perpendicular to and 1 m from the patient, compared to the useful
beam at the patient's surface?

A. 1.0 percent
B. 10.0 percent
C. 0.01 percent
D. 0.1 percent


D


The SI unit of absorbed dose is the?

A. Coulombs/kilogram
B. Gray
C. Curie
D. LET


B

, The cumulative occupational exposure for a 22-year-old radiographer is

A. 22 mrem
B. 55 rem
C. 11 mrem
D. 22 rem


D


OSL dosimeters may be scanned and reanalyzed?

A. Only once
B. Monthly
C. Five times
D. An unlimited number of times


D


Primary radiation barriers must be at least how high?

A. 6 ft
B. 8 ft
C. 5 ft
D. 7 ft


D