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Electric Charges And Fields

Question
CBSEENPH12037243

Two equal negative charges – q are fixed at points (0, a) and (0, - a). A positive charge Q is released from rest at the point (2a, 0) on the x-axis. The charge Q will
  • execute SHM about the origin
  • move to origin and remain at rest
  • move to infinity
  • execute oscillation but not SHM

Solution

C.

move to infinity