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Two radioactive samples of different ele...

Two radioactive samples of different elements (half-lives `t_1` and `t_2` respectively) have same number of nuclei at `t=0`. The time after which their activities are same is

A

`(T_1T_2)/(T_1-T_2)`

B

`(T_1-T_2)/2`

C

`(T_1+T_2)/2`

D

`(T_1T_2)/(T_1+T_2)`

Text Solution

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The correct Answer is:
A
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