Two equal negative charge $-q$ are fixed at the fixed points $(0,\,a)$ and $(0,\, - a)$ on the $Y$-axis. A positive charge $Q$ is released from rest at the point $(2a,\,0)$ on the $X$-axis. The charge $Q$ will

  • [IIT 1984]
  • A

    Execute simple harmonic motion about the origin

  • B

    Move to the origin and remain at rest

  • C

    Move to infinity

  • D

    Execute oscillatory but not simple harmonic motion

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