Two radioactive elements A and|MODERN PHYSICS|JEE-MAIN 2023

JEE MAIN 2023

11-04-2023 S1

Question

Two radioactive elements A and B initially have same number of atoms. The half life of A is same as the average life of B. If $\lambda_{\mathrm{A}}$ and $\lambda_{\mathrm{B}}$ are decay constants of A and B respectively, then choose the correct relation from the given options.

Select the correct option:

$\lambda_A=\lambda_B$

$\lambda_{\mathrm{A}}=2 \lambda_{\mathrm{B}}$

$\lambda_{\mathrm{A}}=\lambda_{\mathrm{B}} \ln 2$

$\lambda_{\mathrm{A}} \ln 2=\lambda_{\mathrm{B}}$

✓ Correct! Well done.

✗ Incorrect. Try again or view the solution.

Solution