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Electrostatics question

2016 · Q119
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Electrostatics question

2016 · Q119

NEETPhysicsElectrostaticsMCQ+4 / −1
Two identical charged spheres suspended from a common point by two massless strings of lengths lll, are initially at a distance d(d < < lll) apart because of their mutual repulsion. The charges begin to leak from both the spheres at a constant rate. As a result, the spheres approach each other with a velocity v. Then v varies as a function of the distance x between the spheres, as
  1. A
    v ∝\propto∝ x−-−1/2
  2. B
    v ∝\propto∝ x−-−1
  3. C
    v ∝\propto∝ x1/2
  4. D
    v ∝\propto∝ x
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