A large number of particles are placed around the origin, each at a distance R from the origin. The distance of the center of mass of the system from the origin is

Answer

B

Explanation

As large number of particles is situtated at a distance R from the origin. If particles are uniformly distributed and make a circulalr boundary around the origin, then center of mass will be at the origin.
While, if the particles are not uniformly distributed, then center of mass will lie between particle and origin. This implies that the distnace between center of mass and origin is always less than or equal to R.