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Two concentric metallic hollow spheres of radii $r_1$ and $r_2$ $(r_1 < r_2)$ are given electric charge $q_1$ and $q_2$ respectively as shown in the figure. The value of $q_2$ so that the inner sphere must be at a higher potential than that of the outer sphere.

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(D) can be of any value
Hence D is the correct value
answered Jun 10, 2014 by meena.p

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