question_answer

Green light is incident at the polarizing angle on a certain glass plate. The angle of refraction is\[\mathbf{32}{}^\circ \]. What are : (i) the polarizing angle, (ii) the index of refraction of glass? (iii) Indicate the polarisation components (of electric field) on the reflected and refracted rays, by double arrows and dots.

Answer:

                (i) Refracting angle, \[{{r}_{p}}={{32}^{\circ }}\] Polarising angle, \[{{i}_{p}}={{90}^{\circ }}-{{r}_{p}}={{90}^{\circ }}-{{32}^{\circ }}=\mathbf{5}{{\mathbf{8}}^{\mathbf{o}}}\]. (ii) Refractive index of glass, \[\mu =\tan {{i}_{p}}=\tan {{58}^{\circ }}=\mathbf{1}\mathbf{.6}\]  (iii) The polarisation components of electric field on the reflected and refracted rays are shown in Fig.