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 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 ?

A point mass m_(0) is placed at distance R//3 from the centre of spherical shell of mass m and radius R. the gravitational force on the point mass m_(0) is

A block of mass m is lying at a distance r from a spherical shell of mass m and radius r, then :

A particle of mass M is situated at the centre of a spherical shell of same mass and radius a. The gravitational potential at a point situated at (a)/(2) distance from the centre will be: