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Two isolated concentric conducting spher...

Two isolated concentric conducting spherical shells have radii `R` and `2R` and uniform charges q and `2q` respectively.If `V_(1)` and `V_(2)` are potentials at points located at distances `3R` and `(R)/(2)` respectively from the centre of shells.Then the ratio of `((V_(2))/(V_(1)))` will be

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