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Question

Assertion :A point charge is placed inside a cavity of conductor as shown. Another point charge Q is placed outside the conductor as shown. Now as the point charge Q is pushed away from conductor, the potential difference (VAVB) between two points A and B within the cavity of sphere remains constant Reason: The electric field due to charge on outer surface of conductor and outside the conductor is zero at all points inside the conductor
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  1. Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
  2. Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
  3. Assertion is correct but Reason is incorrect
  4. Assertion is incorrect but Reason is correct

A
Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
B
Assertion is incorrect but Reason is correct
C
Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
D
Assertion is correct but Reason is incorrect
Solution
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As we know that that the electric field inside the conductor is zero, so the field inside the conductor is constant. Therefore the potential between point A and B will remain constant.
Ans: (A)

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