A small mass m is moved slowly from the surface of the earth to a height h above the surface. The work done (by an external agent) in doing this is a) mgh, for all values of h b) mgh, for h lt lt R c)1/2 -mgR,for h = R d)-1/2 mgR , for h = R

A small mass m is moved slowly from the surface of the earth to a heig

1.	A small mass m is moved slowly from the surface of the earth to a height h above the surface. The work done (by an external agent) in doing this is a) mgh, for all values of h b) mgh, for h lt lt R c)1/2 -mgR,for h = R d)-1/2 mgR , for h = R
Answer» only a & B are TRUE only b&C are true only a & d are true All are true ANSWER :B