The activity of a sample of a radioactiv...

The activity of a sample of a radioactive meterial is `A_1` , at time `t_1` , and `A_2` at time `t_2(t_2 gt t_1)` . If its mean life T, then

A

`A_1t_1=A_2t_2`

B

`(A_1-A_2)/(t_2-t_1) = "constant"`

C

`A_2=A_1e^(t_1-t_2//T)`

D

`A_2=A_1e^(t_1//Tt_2)`

Text Solution

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The correct Answer is:

C

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