1.

The half-life of a radioactive decay is x times its mean life. The value of zx isA. `0.3010`B. `0.6930`C. `0.6020`D. `(1)/(0.6930)`

Answer» Correct Answer - b
`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`.


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