Physics

Problem

Which expression correctly relates the half-life

t_{1/2}

of a radioactive nuclide to its decay constant

\lambda

? a)

t_{1/2}=\dfrac{\lambda}{\ln 2}

t_{1/2}=\ln 2\,\lambda

t_{1/2}=\dfrac{\ln 2}{\lambda}

t_{1/2}=\dfrac{1}{\lambda}