P is a point at a distance r from the centre of a solid sphere of radius a. The gravitational potential at P is V. IF V is plotted as a function of r, which is the correct curve ?

P is a point at a distance r from the centre of a spherical shell of mass M and radius a, where r lt a. The gravitational potential at P is

P is a point at a distance r from the centre of a spherical shell of mass M and radius a, where r lt a . The gravitational potential at P is

The potential at a distance R//2 from the centre of a conducting sphere of radius R will be

Two spheres each of mass M and radius R are separated by a distance of r . The gravitational potential at the potential at the midpoint of the line joining the centres of the spheres is

Let V and E represent the gravitational potential and field at a distance r from the centre of a uniform solid sphere. Consider the two statements. A. the plot of V agasinst r is discotinuous B. The plot of E against r is discontinuous.