The figure below depict two situations in which infinitely long static line charges of positive line charge density \lambda are kept parallel to each other.In their resulting electric field,point charge q\text{and} -q are kept in equilibrium between them.The point charges are confused to move in the x-direction only.If they are given a small displacement about their equilibrium position,then the correct statements(s) is (are ) [JEE Adv 2015 P1]

Correct Answer is : Charge +q executes simple harmonic motion while charge −q continues movies in the direction of its displacements

Both charges execute simple harmonic motion.

Both charges will continue moving in the direction of their distance

Charge +q executes simple harmonic motion while charge -q continues movies in the direction of its displacements

Charge-qexecutes simple harmonic motion while charge +q continues movies in the direction of its displacements

JEE Advanced 2015 Paper 1

Section: Physics

Question : 14 of 60

Marks: +1, -0

The figure below depict two situations in which infinitely long static line charges of positive line charge density λ are kept parallel to each other.In their resulting electric field,point charge qand−q are kept in equilibrium between them.The point charges are confused to move in the x-direction only.If they are given a small displacement about their equilibrium position,then the correct statements(s) is (are )

[JEE Adv 2015 P1]

Both charges execute simple harmonic motion.
Both charges will continue moving in the direction of their distance
Charge +q executes simple harmonic motion while charge −q continues movies in the direction of its displacements
Charge−qexecutes simple harmonic motion while charge +q continues movies in the direction of its displacements

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