A radiopharmaceutical vial has an activity of at 12:00 ,p.m

PHYSICS · Subjective · CBSE · Physics · Nuclei · Nuclei

Problem

A radiopharmaceutical vial has an activity of

1.20\,\text{Ci}

at 12:00\,p.m. By 6:00\,p.m. the next day, its activity has decreased to

0.75\,\text{Ci}

. Calculate the half-life of the radioisotope in hours.