JEE Advanced | 2015CapacitanceHard

Question

A parallel plate capacitor having plates of area S and plate separation d, has capacitance C1 in air. When two dielectrics of different relative permittivity (ε1 = 2 and ε2 = 4) are introduced between the two plates as shown in the figure, the capacitance becomes C2. The ratio is :-
                                           

Options

A.6/5
B.5/3
C.7/5
D.7/3

Solution

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