The half-life of a radioactive decay is x times its mean life. The value of zx is

Options

A. `0.3010`
B. `0.6930`
C. `0.6020`
D. `(1)/(0.6930)`

Answer

b

Explanation

`T_(1//2) =(0.693)/(lambda)`or `T_(1//2)=0.693[(1)/(lambda)]`
or `T_(1//2)=0.693 tau`
Clearly, `x=0.693`.