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The half life period of a radioactive su...

The half life period of a radioactive substance having radioactive disintegration constant `231sec^(-1)` is :

A

`3.0xx10^(-2)sec`

B

`3.0xx10^(-3)sec`

C

`3.3xx10^(-2)` sec

D

`3.3xx10^(-3)` sec.

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The correct Answer is:
B
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