Physics - Wave Optics Question with Solution | TestHub

Two polarisers $P_1$ and $P_2$ are placed in such a way that the intensity of the transmitted light will be zero. A third polariser $P_3$ is inserted in between $P_1$ and ${\mathrm{P}}_2$, at the particular angle between ${\mathrm{P}}_2$ and ${\mathrm{P}}_3$. The transmitted intensity of the light passing the through all three polarisers is maximum. The angle between the polarisers ${\mathrm{P}}_2$ and ${\mathrm{P}}_3$ is :