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Two equipotential spherical surface havi...

Two equipotential spherical surface having potential 20V and 0V are as shown in figure. There is no charge anywhere in space except on the surface of both the spheres. Then which of the following figure represents the nature of electric field in region between the spherical surfaces by electric lines of forces.

A

B

C

D

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The correct Answer is:
D
Since both spherical surface are equipotential. The electric lines of force should be normal to both spherical surfaces. The correct choice is
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