The half-life of a certain radioisotope is

PHYSICS · Single correct · CBSE · Physics · Nuclei · Nuclei

Problem

1.0\,\text{year}

. Its decay constant expressed in

\text{s}^{-1}

is closest to (a)

6.9\times10^{-9}

(b)

4.6\times10^{-8}

(c)

2.2\times10^{-8}

(d)

3.2\times10^{-8}