MOSBY'S RADIATION (RADIATION
PROTECTION) EXAM QUESTIONS
WITH CORRECT DETAILED ANSWERS
WITH RATIONALES|| A+ STUDY GUIDE
According to NCRP Report #160, natural background radiation
represents what percentage of humans' radiation exposure?
a. 21%
b. 50%
c. 82%
d. 5% Correct Answer B. Of this, 82% comes from Radon gas
According to NCRP Report #160, the greatest source of natural
background radiation exposure is:
a. cosmic rays
b. Radioactive materials
c. The body itself
d. Radon gas Correct Answer D. Radon gas is part of humans'
natural background exposure which totals 50% of humans' total
exposure
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