Q 12-13-019NEETJEE MainMedium
The half-life of a radioactive substance is $69.3$ days. Its mean life is
Answer: (B) $100$ days
$\tau = \dfrac{T_{1/2}}{\ln 2} = \dfrac{69.3}{0.693} = 100$ days.
Solution by Sreeraj P, M.Sc Physics
The half-life of a radioactive substance is $69.3$ days. Its mean life is
Answer: (B) $100$ days
$\tau = \dfrac{T_{1/2}}{\ln 2} = \dfrac{69.3}{0.693} = 100$ days.
Solution by Sreeraj P, M.Sc Physics