The decay constant of a radioactive sample is

PHYSICS · Single correct · A Level · Physics · Nuclear physics · Nuclear physics

Problem

\lambda

. The half-life and mean life of the sample are respectively given by (1)

\frac{1}{\lambda}

and

\frac{\ln2}{\lambda}

(2)

\frac{\ln2}{\lambda}

and

\frac{1}{\lambda}

(3)

\lambda\ln2

and

\frac{1}{\lambda}

(4)

\frac{\lambda}{\ln2}

and

\frac{1}{\lambda}