Question

A point particle of mass M is attached to one end
of a massless rigid non-conducting rod of length L.
Another point particle of same mass is attached to
the other end of the rod. The two particles carry
charges to and q repectively. This arrangement
is held in a region of uniform electric field E such
that the rod makes a small angle (< 5%) with the
field direction. The minimum time needed for the
rod to become parallel to the field after it is set
free. (rod rotates about centre of mass)
ML
(A) 21
ML
29E
(B)
2qE
TC ML
ML
(C
)
(D) 410
2 V2qE
2qE​

Answer 1

Answer:

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