MCQ
A solid sphere of radius $R_1$ and volume charge density $P=\frac{P_0}{r}$ is enclosed by a hollow sphere of radius $R_2$ with negative surface charge destiny $\sigma_2$ such that the total charge in the system is zero $P _0$ is positive constant and $r$ is the distance from the centre of sphere the ratio $\frac{ R _2}{ R _1}$ is:
- A$\frac{\sigma}{\text{p}_0}$
- B$\sqrt{\frac{2\sigma}{\text{p}_0}}$
- ✓$\sqrt{\frac{\text{p}_0}{2\sigma}}$
- D$\frac{\text{p}_0}{\sigma}$
