The masses and radii of the Earth and the Moon are `M_1, R_1 and M_2,R_2` respectively. Their centres are at a distance d apart.

The masses and radii of the Earth and the Moon are `M_1, R_1 and M_2,R_2` respectively. Their centres are at a distance d apart. The minimum speed with which a particel of mass m should be projected from a point midway between the two centres so as to escape to infinity is ........
A. `sqrt((4G)/r(m_(e)+M_(m)))`
B. `(4G)/rsqrt((m_(e)+M_(m)))`
C. `sqrt((2G)/r(M_(e)+M_(m)))`
D. `(2G)/rsqrt((M_(e)+M_(m)))`

The masses and radii of the Earth and the Moon are `M_1, R_1 and M_2,R_2` respectively. Their centres are at a distance d apart. The minimum speed wit

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