Physics - Modern Physics Question with Solution | TestHub

A mixture consists of two radioactive materials $A_1$ and $A_2$ with half lives of $20\mathrm{s}$ and $10\mathrm{s}$ respectively. Initially the mixture has $40\mathrm{g}$ of $A_1$ and $160\mathrm{g}$ of $A_2$. The amount of the two in the mixture will become equal afterNEET 2012 (Screening)