Capacitor

Two dielectric slabs having dielectric constant '\(\mathrm{K}_1\)' and '\(\mathrm{K}_2\)' of thickness \(\frac{\mathrm{d}}{4}\) and \(\frac{3 \mathrm{~d}}{4}\) are inserted between the plates as shown in figure. The net capacitance between \(A\) and \(B\) is \(\left[\varepsilon_0\right.\) is permittivity of free space]