Question Detail
Question
Two identical conducting plates of area A are separated by distance d. A metal sheet of thickness d/2 is inserted between the plates. The ratio of capacitance before and after insertion is:
Correct Answer
Option A is the correct answer.
Detailed Explanation
A metal sheet cancels its own thickness of the gap. Remaining gap = d/2, so C doubles. Ratio before:after = 1:2.
Hint
A metal sheet cancels its own thickness of the gap.