For 10 minutes, an individual received 120 mrad/hour dose rate; how much exposure did the person receive?

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Multiple Choice

For 10 minutes, an individual received 120 mrad/hour dose rate; how much exposure did the person receive?

Explanation:
Exposure equals dose rate times time, with the time expressed in the same units as the rate. The rate is 120 mrad per hour, and the duration is 10 minutes, which is 1/6 of an hour. So 120 mrad/hour × 1/6 hour = 20 mrad. (You can also see this by converting the rate to per minute: 120 mrad/hour ÷ 60 = 2 mrad/min, then 2 mrad/min × 10 min = 20 mrad.) The exposure received is 20 mrad.

Exposure equals dose rate times time, with the time expressed in the same units as the rate. The rate is 120 mrad per hour, and the duration is 10 minutes, which is 1/6 of an hour. So 120 mrad/hour × 1/6 hour = 20 mrad. (You can also see this by converting the rate to per minute: 120 mrad/hour ÷ 60 = 2 mrad/min, then 2 mrad/min × 10 min = 20 mrad.) The exposure received is 20 mrad.

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