The change in the value of g at a height ‘h’ above the surface of the earth is the same as at a depth ‘d’ below the surface of earth. When both ‘d’ and ‘h’ are much smaller than the radius of earth, then which one of the following is correct?
(1) d= h/2
(2) d =3h/2
(3) d = 2h
(4) d = h
