BITSAT 2016 Paper

Section: Physics

Question : 35 of 150

Marks: +1, -0

Two identical charged spheres suspended from a common point by two massless strings of lengths l, are initially at a distance d (d << l ) 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 :

v∝x
1
2
v∝x
v∝x−
1
2
v∝x−1

Validate

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