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Q.

A solid non conducting sphere of radius R contains some positive charge uniformly distributed throughout its volume. Then electric potential at a radial distance γ

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a

increases as r increases for γR

b

decreases as r increases for γR.

c

remains constant s r increases for γR

d

decreases as increases for γR

answer is B.

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Detailed Solution

For a uniformly charged solid non-conducting sphere, V=VS2(3−γ2R2) for γ≤R and V=VS.Rγ for γ≥R where VS is the potential at the surface. So option (2) is right.
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