MHT CET 2026 Physics question
A capacitor has capacity C when its parallel plates are separated by air medium of thickness 'd'. A slab of material of dielectric constant K having area equal to that of plates but thickness is inserted between the plates. Capacitance of the capacitor in the presence of slab will be
Answer: (D)
Solution
Originally . With a full-area slab of thickness , the capacitor is equivalent to two capacitors in series: an air gap of and a dielectric of . The effective separation is $ + =
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