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Q.

(A) : In a cavity within a conductor, the electric field is zero.
(R) : Charges in a conductor reside only at its surface.

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a

'A' is true and 'R' is false

b

Both 'A' and 'R' are true and 'R' is not the correct explanation of 'A'

c

Both 'A' and 'R' are true and 'R' is the correct explanation of 'A'.

d

'A' is false and 'R' is true

answer is A.

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Detailed Solution

The Net electric field inside the conductor is zero because of induced charges and the charges reside only on the surface.

The correct option is A.

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