A point particle of mass m is attached to one end of massless rigid non-conducting rod of length l. Another point particle of same is attached to the other end of the rod. The two particles carry equal charges +q and -q respectively. This arrangement is held in a region with the field E such that the rod makes an angle with the field direction :

A point particle of mass m is attached to one end of massless rigid no

1.	A point particle of mass m is attached to one end of massless rigid non-conducting rod of length l. Another point particle of same is attached to the other end of the rod. The two particles carry equal charges +q and -q respectively. This arrangement is held in a region with the field E such that the rod makes an angle with the field direction :
Answer» The tension in ROD remains constant If Q is very small, the rod exectutes simple harmonic motion of period `2PI sqrt((ml)/(2qE))` At every INSTANT, net force on the system is zero Both (B) and (c ) are correct Answer :D

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