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At t= 0,a sample of radionuclide A has t...

At `t= 0`,a sample of radionuclide A has the same decay rate as a sample of radionuclide B has at `t = 60` min. The disintegration constants of A and B are `lambda_(A)` and `lambda_(B)` respectively, with `lambda_(A) lt lambda_(B)`.

A

The half life of radionuclide A is greater than that of B.

B

At `t=60` min, number of atoms in sample of meterial A is greater than that of smaple B.

C

The two samples will never have the same decay rate simultaneously.

D

After some time, the two samples will have the same decay rate simultaneously for an instant.

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The correct Answer is:
A, C
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