BITSAT 2017 Slot 2 Solved Paper

A parallel plate capacitor with air between the plates has a capacitance of 9pF. The separation between the plates is d. The space between the plates is now filled with two dielectrics constant K1=3 and thickness

d

3

while the other one has dielectric constant K2=6 and thickness

2d

3

. Capacitance of the capacitor is now