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

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

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