Module 3 RADT 117 questions & answers

Module 3 RADT 117 questions & answers
The exposure rate to a body 3 feet from a source of radiation is 16
R/hour. What distance from the source would be necessary to
decrease the exposure to 6 R/hour?
5 feet
7 feet
10 feet
14 feet - answer 5 feet


For a given technique, the x-ray intensity at the 16 cm distance is
160 mR. What is the intensity on the surface of the vertical bucky
at the 64 cm distance?
640 mR
80 mR
40 mR
10 mR - answer 10mR


The intensity of radiation is 400 mR at the distance of 40 inches.
What will the intensity be if the source of radiation was moved to
80 inches?
100 mR
200 mR
800 mR
1600 mR - answer 100mR

, The intensity of the radiation from the x-ray tube measured at the
distance of 40 inches was 1,000 mR. What will intensity be if the
tube was moved to the distance of 72 inches?
250 mR
308 mR
4,000 mR
30 mR - answer 308mR


The exposure from the tube operated at 60 kVp on the surface of
the radiographic table was 0.01 mR at the distance of 100 inches.
What will the exposure be when the tube is moved to the distance
of 10 inches?
1 mR
10 mR
100 mR
0.0001 mR - answer 1mR


Waves and particles emitted from unstable nuclei are called:
Energy
Heat
Waves
Radiation - answer Radiation


A radionuclide refers to atoms with which of the following?
A large nucleus
Radioactive nucleus