If the decay or disintegration constant of a radioactive substance is $\beta $, then its half life and mean life are respectively
$(log_e \,2 =ln\, 2)$
If the decay or disintegration constant of a radioactive substance is $\beta $, then its half life and mean life are respectively
$(log_e \,2 =ln\, 2)$
- [IIT 1989]
- A
$\frac{{1}}{{\lambda}} $ and $\frac{{{{\log }_e}\,2}}{\lambda }$
- B
$\frac{{{{\log }_e}\,2}}{\lambda }$ and $\frac{{1}}{{\lambda}} $
- C
$\lambda \;{\log _e}\,2$ and $\frac{{1}}{{\lambda}} $
- D
$\frac{\lambda }{{{{\log }_e}\,2}}$ and $\frac{{1}}{{\lambda}} $
Similar Questions
The half life of $^{131}I$ is $8\, days$. Given a sample of $^{131}I$ at time $t = 0,$ we can assert that
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- [IIT 1998]
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