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The activity of a radioactive sample is ...

The activity of a radioactive sample is measures as `N_0` counts per minute at `t = 0` and `N_0//e` counts per minute at `t = 5 min`. The time (in minute) at which the activity reduces to half its value is.

A

`5 log_(e ) 2`

B

`log_(e )2//5 `

C

` (5 ) /( log _(e ) 2)`

D

` 5 log-(10) 2`

Text Solution

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The correct Answer is:
A
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