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Electrostatics question

2015 · Shift 1 · Q41
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Electrostatics question

2015 · Shift 1 · Q41

JEE AdvancedPhysicsElectrostaticsMultiple correct+4 / −2
The figures below depict two situations in which two infinitely long static line charges of constant positive line charge density λ\lambdaλ are kept parallel to each other. In their resulting electric field, point charges qqq and −q-q−q are kept in equilibrium between them. The point charges are confined to move in the xxx direction only. If they are given a small displacement about their equilibrium positions, then the correct statement(s) is (are) JEE Advanced 2015 Paper 1 Offline Physics - Electrostatics Question 50 English
  1. A
    Both charges execute simple harmonic motion
  2. B
    Both charges will continue moving in the direction of their displacement
  3. C
    Charge +q+q+q executes simple harmonic motion while charge −q-q−q continues moving in the direction of its displacement
  4. D
    Charge −q-q−q executes simple harmonic motion while charge +q+q+q continues moving in the direction of its displacement
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