If R is the radius of earth , the height ,at which the weight of a body becomes 1/4 of its weight on the surface of earth , is

If R is the radius of earth , the height ,at which the weight of a bod

1.	If R is the radius of earth , the height ,at which the weight of a body becomes 1/4 of its weight on the surface of earth , is
Answer» 2R R R/2 R/4 Answer :B