The radioactivity of a certain material drops to $\frac{1}{{16}}$ of the initial value in ${\rm{2}}\,\,{\rm{h}}$. The half-life of this radio nuclide is

JEE PHYSICS MCQ: NUCLEI

1 Medium

1 of 1

Application +4 | -1

The radioactivity of a certain material drops to

\frac{1}{{16}}

of the initial value in

\mathrm{2}\,\,\mathrm{h}

. The half-life of this radio nuclide is

View answer and explanation

Correct option: C

\mathrm{30 }\,\mathrm{min}

Option C (

\mathrm{30 }\,\mathrm{min}

) is correct because after 4 half-lives, the radioactivity drops to 1/16 of its initial value, which corresponds to 2 hours.