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Standard XII

Physics

Dielectrics - A Microscopic View

A solid condu...

Question

A solid conducting sphere of radius $a$ is surrounded by a thin uncharged concentric conducting shell of radius $2 a$ . A point charge $q$ is placed at a distance $4 a$ from common centre of conducting sphere and shell. The inner sphere is then grounded.

Select the correct statement:

Charge on surface of the inner sphere is non-uniformly distributed.

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Charge on inner surface of outer shell is non-uniformly distributed.

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Charge on outer surface of outer shell is non-uniformly distributed.

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charges on the all surfaces are uniformly distributed.

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Solution

The correct option is C Charge on outer surface of outer shell is non-uniformly distributed.
The inner sphere and the inner surface of the shell have uniform charge distribution.

The outer surface of the shell depends on induced charge distribution due to point charge $q$ . So it is non-uniform.

Hence, option (c) is the correct alternative.

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A solid conducting sphere of radius a is surrounded by a thin uncharged concentric conducting shell of radius 2a. A point charge q is placed at a distance 4a from common centre of conducting sphere and shell. The inner sphere is then grounded. Select the correct statement:

A solid conducting sphere of radius $a$ is surrounded by a thin uncharged concentric conducting shell of radius $2 a$ . A point charge $q$ is placed at a distance $4 a$ from common centre of conducting sphere and shell. The inner sphere is then grounded.

Select the correct statement: