Tritium has a half-life of 12.5 y underg...

Tritium has a half-life of 12.5 y undergoing beta decay. What fraction of a sample of pure tritium will remain undecayed after 25 y.

A

`1/2`

B

`1/4`

C

`1/8`

D

`1/16`

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The correct Answer is:

B

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