Electric charge of 10-3 C is uniformly distributed
on a thin ring of radius 1 m. A particle of mass
0.9 g and carrying charge 1 micro columb is lying on the
axis of the ring at a distance of 1 cm from centre.
The angular frequency of the particle be
(a) 100 rad/s
(c) 5 rad/s
(b) 10 rad/s