Two identical charged spheres suspended from a common point by two mass-less strings of length `l` are initially at a distance d ( `d ltlt l`) apart because of their mutual repulsion . The charge begins to leak from both the spheres at a constant rate. As a result the charge approach each other with a velocity `v`. Then as a function of distance `x` between them .

Options

A. `upsilon prop x^((1)/(2))`
B. `upsilon prop x`
C. `upsilon prop x^(-(1)/(2))`
D. `upsilon prop x^(-2)`

Answer

C