Question

4. A beam of light traveling in air strikes a glass plate at an angle of incidence of 45. The glass has an index of refraction of 1.5. at is the angle of refraction for the light transmitted into the glass? b) If the glass plate is 2.0 cm thick, describe how the emergent light relates to the initial light.

Answer 1

Shell's law sin I /sin r = mu r /mu I rightarrow sin 45 degree /sin r = 1.5 /1.0 rightarrow r = 28.12 degree emergent ray will be parallel to the direction of initial ray & it will be shifted by s = t sin (L_1 - r_1) /cos r_1 rightarrow s = (2.0cm) sin (45 - 28.12) /cos 28.12 degree rightarrow s = 0.658 cm