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Two equal negative charges -q each are f...

Two equal negative charges `-q` each are fixed at points `(0,-a)` and `(0,a)` on y-axis. A positive chaarge `Q` is released from rest at the point `(2a,0)` on the x-axis. The charge Q will

A

execute simple harmonic motion about the origin

B

move to the origin and remain at rest

C

move to infinity

D

same as at point 25 cm aways form the surface

Text Solution

Verified by Experts

The correct Answer is:
D
Motion is simple harmonic only if Q is released from a point not very far from the origin on x-axis. Otherwise motion is periodic but not simple harmonic.
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