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The activity of a radioavtive sample is ...

The activity of a radioavtive sample is measured as `N_(0)` counts per minute at `t=0and (N_(0))/(e)` counts per minute at t=5 min. The time (in minutes) at which the activity reduces to half its value is

A

`log_e2//5`

B

`5/(log_e2)`

C

`5 log_(10)2`

D

`5 log _e 2`

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The correct Answer is:
D
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