Two particles , each of mass ` m` and charge `q`, are attached to the two ends of a light rigid rod of length ` 2 R` . The rod is rotated at constant angular speed about a perpendicular axis passing through its centre. The ratio of the magnitudes of the magnetic moment of the system and its angular momentum about the centre of the rod is

Explanation

As there are no external forces acting on the system, the momentum of the centre of mass of the system rod + dine remains conserved. There are no external toques acting on the system, the angular momentum of the system about any point is constant. But there is a collision for acting on the dia, the torque about the centre of ma notere. Hence, the angular moment of the dis about the centre of o nstant. Also, the collision between the dine and the red is inelastic, the mechanical energy of the system is not constant
The correct options are (b) and (c).