When you double the distance from the radiation source, how do the counts per minute change?

Question

Chemistry

Chef

13 January, 23:39

When you double the distance from the radiation source, how do the counts per minute change?

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Jorden Bennett · Answer 1

When you double the distance from a radioactive source, the energy at that distance decreases by a factor of four. So the counts per minute should also decrease by a factor of four.