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A radioactive sample has half-life of 5 ...

A radioactive sample has half-life of `5` years. Probability of decay in `10` years will be.

A

`100%`

B

`75%`

C

`50%`

D

`25%`

Text Solution

Verified by Experts

The correct Answer is:
B
`n = (t)/(T_(1//2)) = (10)/(5) = 2, (N)/(N_(0)) = ((1)/(2))^(2) = (1)/(4)`
`(N')/(N_(0)) =1- (1)/(4) = (3)/(4), (3)/(4)xx100 = 75%`
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