question_answer

At what angle of incidence should a light beam strike a glass slab of refractive index \[\sqrt{3}\], such that the reflected and the refracted rays are perpendicular to each other?                                              Or What is the polarising angle of a medium of refractive index \[\sqrt{3}\]\[(\mathbf{or}\text{ }\mathbf{1}.\mathbf{732}\])?                    

Answer:

                When the reflected and refracted rays are perpendicular or at the polaring angle of incidence, \[\tan {{i}_{p}}=\mu =\sqrt{3}\] \[\therefore \]  \[{{i}_{p}}={{\tan }^{-1}}(\sqrt{3})=\mathbf{6}{{\mathbf{0}}^{\mathbf{o}}}\]