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At a given instant, there are 25% undeca...

At a given instant, there are 25% undecayed radioactive nuclei in a sample. After 10 seconds the number of undecayed nuclei reduces to 12.5%, the mean life of the nuclei is

A

The mean life of the nuclei 0.0693 second

B

The mean life of the nuclei is 14.43 second

C

The time internal in undecayed which the number of nuclei further reduce to 16.25% is 40 second

D

The time interval in which the number of undecayed nuclei further reduce to 6.25% is 30 second

Text Solution

Verified by Experts

The correct Answer is:
B
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