Electrostatic Potential and Capacitance Part 2

A parallel plate capacitor is filled equally (half) with two dielectrics of dielectric constants ε1 and ε2, as shown in figures. The distance between the plates is d and area of each plate is A. If capacitance in first configuration and second configuration are C1 and C2 respectively, then ‌C1∕C2 is First ConfigurationSecond Confiquration