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MHT CET Physics question

PhysicsElectrostatic Potential and CapacitanceMHT CET

A slab of material of dielectric constant has the same area as the plates of a parallel plate capacitor but has a thickness , where is the separation of the plates. The ratio of the capacitance (in the presence of the dielectric) to the capacitance (in the absence of the dielectric) is

Answer: (C)

Solution

, so ; (b) and (d)

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Question ID VK-075518