Two identical charged spheres, suspended from a common point by two massless strings of length
, are initially at a distance
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
Text Solution
Verified by ExpertsThe correct answer is:
B

At balance, 

If separation is
at instant
,

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