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Two equal negative charges -q are fixed ...

Two equal negative charges `-q` are fixed at points `(0, -a)` and `(0,a)` on y-axis. A poistive charge Q is released from rest at 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 remains at rest

C

Move to infinity

D

Execute oscillatory but not simple harmonic motion.

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