$10\,\,g$ of radioactive material of half-life ${\rm{15 }}\,{\rm{year}}$ is kept in store for ${\rm{20 }}\,{\rm{years}}$. The disintegrated material is

JEE PHYSICS MCQ: NUCLEI

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Application +4 | -1

10\,\,g

of radioactive material of half-life

\mathrm{15 }\,\mathrm{year}

is kept in store for

\mathrm{20 }\,\mathrm{years}

. The disintegrated material is

View answer and explanation

Correct option: C

6.03\,\,g

Option C (

6.03\,g

) is correct because after 20 years, approximately 6.03g of the radioactive material will have disintegrated.