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The radioactivity of sample is R(1) at a...

The radioactivity of sample is `R_(1)` at a time `T_(1)` and `R_(2)` at a time `T_(2)` . If the half -life of thespeciman is T, the number of atoms that have disintegrated in the time `(T_(2)-T_(1))` is equal to :

A

`(R_(1)T_(1)-R_(2)T_(2))`

B

`(R_(1)-R_(2))`

C

`(R_(1)-R_(2))//T`

D

`(R_(1)-R_(2))T//0.693`

Text Solution

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The correct Answer is:
d
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