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Q.

Charge Q is uniformly distributed only on curved surface of thin hemispherical shell. A,B and C are three points on the circular base of hemisphere, such that A is centre. Let the electric potential at points A,B and C be VA,VB,VC respectively. Then

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a

VC>VB>VA

b

 VB>VA and VB>VC

c

VA=VB=VC

d

VA>VB>VC

answer is D.

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Detailed Solution

Since the electric field at all points on circular base of hemisphere is normal to plane of circular base.

Circular base of hemisphere is an equipotential surface.

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