Two radioactive materials $\mathrm{Y}_1$ and $\mathrm{Y}_2$ initially contain same number of nuclei. Their decay constants are $9 \lambda \mathrm{s}^{-1}$ and $6 \lambda \mathrm{s}^{-1}$ respectively. The time after which the ratio of number of undecayed nuclei of $\mathrm{Y}_1$ and $\mathrm{Y}_2$…

Question

Two radioactive materials $\mathrm{Y}_1$ and $\mathrm{Y}_2$ initially contain same number of nuclei. Their decay constants are $9 \lambda \mathrm{s}^{-1}$ and $6 \lambda \mathrm{s}^{-1}$ respectively. The time after which the ratio of number of undecayed nuclei of $\mathrm{Y}_1$ and $\mathrm{Y}_2$ becomes $\frac{1}{e}$ is

Aicharya · Accepted Answer

No solution. Refer to answer key.

Two radioactive materials $\mathrm{Y}_1$ and $\mathrm{Y}_2$ initially contain same number of nuclei. Their…

Solution