JEE Main 2022 · 30 Jul · Shift 2, Physics question 25

Combination of four parallel plate air capacitors is shown in figure. Separation between the plate P$_1$ & P$_2$ is $\dfrac d3$ and separation between the plates P$_2$ and P$_3$ is d. The equivalent capacitance of the configuration is _______ μF.

(Given $\dfrac{\epsilon_0A}d=4$ μF. Where A = Area of plates)