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Q.
Column I Column II
A Gravitational force $F_g$ 1 $g(1 - \frac{2h}{R})$
B $g_{\text{surface of earth}}$ 2 $G \frac{Mm}{R^2}$
C Escape velocity 3 $\sqrt{2gR}$
D $g_{\text{height}}$ 4 $GM/R^2$

Gravitation

Solution:

$(A) \rightarrow (3); (B) \rightarrow (4); (C) \rightarrow (3); (D) \rightarrow (1)$