The activity of a radioactive sample is measured as $N_0$ counts per minute at $t = 0$ and $N_0/e$ counts per minute at $t = 5\, minutes$. The time (in $minutes$) at which the activity reduces to half its value is
The activity of a radioactive sample is measured as $N_0$ counts per minute at $t = 0$ and $N_0/e$ counts per minute at $t = 5\, minutes$. The time (in $minutes$) at which the activity reduces to half its value is
- A
${\log _e}\,2/5$
- B
$\frac{5}{{{{\log }_e}\,2}}$
- C
$5\,{\log _{10}}\,2$
- D
$5\,{\log _e}\,2$
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