Class 12 NEET Physics Electrostatics Questions Part 1

A parallel-plate capacitor of area A, plate separation d and capacitance C is filled with four dielectric materials having dielectric constant k1,k2,k3 and k4 as shown in the figure below. If a single dielectric material is to be used to have the same capacitance C in this capacitor, then its dielectric constant k is given by .