Physics - Wave Optics Question with Solution | TestHub

A system of three polarizers${\mathrm{P}}_1,{\mathrm{P}}_2,{\mathrm{P}}_3$is set up such that the pass axis of${\mathrm{P}}_3$is crossed with respect to that of${\mathrm{P}}_1$. The pass axis of${\mathrm{P}}_2$is inclined at${60}^{\mathrm{o}}$to the pass axis of${\mathrm{P}}_3.$When a beam of unpolarized light of intensity${\mathrm{I}}_{\mathrm{o}}$is incident on${\mathrm{P}}_1,$the intensity of light transmitted by the three polarizers is$\mathrm{I}$. The ratio$\left({\mathrm{I}}_{\mathrm{o}}/\mathrm{I}\right)$equals (nearly):