Physics Question from JEE Main 2026 · 23 January, Shift 1

The space between the plates of a parallel plate capacitor of capacitance $C$ (without any dielectric) is now filled with three dielectric slabs of dielectric constants $k_1 = 2$, $k_2 = 3$ and $k_3 = 5$ (as shown in figure). If new capacitance is $n/3 \, C$ then the value of $n$ is _____.