Question
A radioactive sample $S_1$ having the activity $A_1$ has twice the number of nuclei as another sample $S_2$ of activity $A_2$. If $A_2 = 2A_1$, then the ratio of the half-life of $S_1$ to the half-life of $S_2$ is
A radioactive sample $S_1$ having the activity $A_1$ has twice the number of nuclei as another sample $S_2$ of activity $A_2$. If $A_2 = 2A_1$, then the ratio of the half-life of $S_1$ to the half-life of $S_2$ is