The figures below depict two situations in which two infinitely long static line charges of constant positive line charge density $\lambda$ are kept parallel to each other. In their resulting electric field, point charges $q$ and $-q$ are kept in equilibrium between them. The point charges are confined to move in the x-direction only. If they are given a small dispacement about their equilibrium positions, then the correct ststement(s) is (are) :
Select the correct option:
A
Both charges execute simple harmonic motion.
B
Both charges will continue moving in the direction of their displacement.
C
Charge +q executes simple haramonic motion while charge –q continues moving in the direction of its displacement.
D
Charge –q executes simple haramonic motion while charge +q continues moving in the direction of its displacement.
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