The time required for a radioactive species to decay of its initial amount is

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

Problem

The time required for a radioactive species to decay

\frac{2}{3}

of its initial amount is

t

. The fraction of radioactive species left after

0.5t

is: (1)

\frac{1}{\sqrt{3}}

(2)

\frac{1}{\sqrt{5}}

(3)

\sqrt{\frac{2}{3}}

(4)

\frac{1}{3}