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The masses and radii of the earth and mo...

The masses and radii of the earth and moon are `(M_(1), R_(1))` and `(M_(2), R_(2))` respectively. Their centres are at a distance r apart. Find the minimum escape velocity for a particle of mass 'm' to be projected from the middle of these two masses :

A

`V=sqrt(4G(M_(1)+M_(2))/(r )`

B

`V=1/2sqrt(2G(M_(1)+M_(2))/(r )`

C

`V=sqrt(2G)(M_(1)+M_(2))/(r )`

D

`V=1/2sqrt(4G(M_(1)+M_(2))/(r )`

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