A pure sample of has an initial activity of

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

Problem

A pure sample of

^{60}\text{Co}

has an initial activity of

5.0\,\text{kBq}

. The half-life of

^{60}\text{Co}

5.3\,\text{years}

. What will be the activity of the sample after

15.9\,\text{years}

? (a)

1.25\,\text{kBq}

(b)

0.25\,\text{kBq}

(c)

0.63\,\text{kBq}

(d)

0.83\,\text{kBq}