AP EAMCET Medical 2017 Shift 1 Paper

A parallel plate air capacitor with plate area ‘A’ and plate separation ‘d’ filled with three dielectric materials of dielectric constants K1 , K2 and K3 is as shown in the figure. If the three dielectric materials are replaced by a single dielectric materialof dielectric constant ‘K’ filling the entire capacitor, the capacity remains the same, then