JEE Main 2011 Physics question
Two identical charged spheres suspended from a common point by two massless strings of length l are initially a distance d(d << 1) apart because of their mutual repulsion. The charge begins to leak from both the spheres at a constant rate. As a result the charges approach each other with a velocity v. Then as a function of distance x between them,
Answer: (4)
Solution
For small angles, equilibrium gives $ = mg ⇒ ⇒ q
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