Physics - Wave Optics Question with Solution | TestHub

Unpolarized light of intensity$I$is incident on a system of two polarizers,$A$followed by$B$. The intensity of emergent light is$\frac{I}{2}$. If a third the polarizer$C$is placed between$A$and$B$the intensity of emergent light is reduced to$\frac{I}{3}$. The angle between the polarizers$A$and$C$is$\theta$, then