A parallel plate capacitor with air between the plates has a capacitance of 9 pF. The separation between its plates is ‘d’. The space between the plates is now filled with two dielectrics. One of the dielectrics has dielectric constant k1 = 3 and thickness d3 while the other one has dielectric constant k2 = 6 and thickness 2d3. Capacitance of the capacitor is now.
