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Ceratain radioactive substance reduces t...

Ceratain radioactive substance reduces to `25%` of its value is `16 days`. Its half-life is

A

`32 days`

B

`8 days`

C

`64 days`

D

`28 days`

Text Solution

Verified by Experts

The correct Answer is:
b
`(N_(0))/(4)=(N_(0))/(2n) rArr n=2`
Thus, 1`0 days =2 `half-lives
`:. Half-life =8 days`.
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