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A radioactive sample with half-life=T em...

A radioactive sample with half-life=T emits `alpha`-particles. Its total activity is `A_(i)` at some time and `(A_(f))` at a later time. The number of `alpha`-particle emitted by the sample between these two points in time is

A

`A_(i)-A_(f)`

B

`(T)/(In2)(A_(i)-A_(f))`

C

`(In 2)/(T)(A_(i)-A_(f))`

D

`(T)/(In 2)((1)/(A_(f))-(1)/(A_(i)))`

Text Solution

Verified by Experts

The correct Answer is:
B
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