Physics - Wave Optics Question with Solution | TestHub

Unpolarized light of intensity$\mathit{I}$passes through an ideal polariser$A$. Another identical polariser$B$is placed behind$A$. The intensity of light beyond B is found to be$\frac{\mathit{I}}{2}$. Now another identical polariser$C$is placed between$A$and$B$. The intensity beyond B is now found to be$\frac{\mathit{I}}{8}$. The angle between polariser$A$and$C$is