# NEET Physics Nuclei Questions Solved

A radioactive substance has a half-life of 1 year. The fraction of this material, that would remain after 5 years will be

(a) $\frac{1}{32}$              (b) $\frac{1}{5}$
(c) $\frac{1}{2}$                (d) $\frac{4}{5}$