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If M is mass of the earth and R its radius, the ratio of the gravitational acceleration and the gravitational constant is

A. $\frac{R^{2}}{M}$

B. $\frac{M}{R^{2}}$

C. $M R^{2}$

D. $\frac{M}{R}$

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Correct Answer :

B. $\frac{M}{R^{2}}$

g = \frac{G M}{R^{2}} o r \frac{g}{G} = \frac{M}{R^{2}}

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