Physics - Wave Optics Question with Solution | TestHub

Unpolarised light is incident on a water surface at the Brewster angle. The refracted ray meets the block of glass $\left[{\mu }_{\mathrm{g}}=\frac{3}{2}\right]$ immersed in the water $\left({\mu }_{\mathrm{w}}=\frac{4}{3}\right)$. The flat upper surface of the block makes an angle $\alpha$ with water surface. The value of $\alpha$ for which the light reflected from the block is completely polarized. $\left({\tan }^{-1}\frac{9}{8}=48.4\right)$ Fill the value of $10\alpha$.