The activity of a radioactive sample is measured as N0 counts per minute at t = 0 and N0/e counts per minute at t = 5 minutes. The time (in minutes) at which the activity reduces to half its value is
loge2/5
5loge2
5 log102
5 loge2
A
loge2/5
B
5 loge2
C
5loge2
D
5 log102
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