Question 30.CA.4: Suppose a person who has one hand in a wide beam of x rays r...
Suppose a person who has one hand in a wide beam of x rays receives an equivalent dose of 90 millirem in 30 sec. If the person puts both hands in this beam, side by side, for 30 sec, then the equivalent dose the person will receive is
A. 180 millirem, because twice the number of ions will be created.
B. 90 millirem, because the number of ions created per gram is unchanged.
C. 45 millirem, because the radiation is spread over twice as much of the body.
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