Atoms and Nuclei: JEE Main 2019 Physics question

JEE Main 2019 · 10 Apr, Evening shift · Q6090

JEE Main 201910 Apr, Evening shiftPhysicsMediumAtoms and Nuclei183× since 2002

Two radioactive substances A and B have decay constants 5

\lambda

and

\lambda

respectively. At t = 0, a sample has the same number of the two nuclei. The time taken for the ratio of the number of nuclei to become

{\left( {{1 \over e}} \right)^2}

will be :

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JEE Main 2019 Atoms and Nuclei Question with Solution (10 Apr Evening shift, Q6090) | JEE Arc

JEE Main 2019 · 10 Apr, Evening shift · Q6090

JEE Main 201910 Apr, Evening shiftPhysicsMediumAtoms and Nuclei183× since 2002

Two radioactive substances A and B have decay constants 5

\lambda

and

\lambda

respectively. At t = 0, a sample has the same number of the two nuclei. The time taken for the ratio of the number of nuclei to become

{\left( {{1 \over e}} \right)^2}

will be :