A particle of mass M is placed at the centre a uniform spherical shell of equal mass and radius a. The gravitational potential at a point P at a distance a/2 from the centre.

A particle of mass M is placed at the centre a uniform spherical shell

1.	A particle of mass M is placed at the centre a uniform spherical shell of equal mass and radius a. The gravitational potential at a point P at a distance a/2 from the centre.
Answer» `-(GM)/(3A)` `-(2GM)/(3a)` `-(3GM)/(a)` `-(GM)/(a)` ANSWER :C