Considering Earth to be a sphere of radius $R$ having uniform density $\rho$,the value of acceleration due to gravity $g$ in terms of $R$,$\rho$,and $G$ is:
- A$g=\sqrt{\frac{3 \pi R}{\rho G}}$
- B$g=\sqrt{\frac{4}{3} \pi \rho GR}$
- C$g=\frac{4}{3} \pi \rho GR$
- D$g=\frac{GM}{\rho R^2}$
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