Monochromatic light in air strikes a smooth slab of sapphire (index ) at an angle of…
PHYSICS · Multi-part · CBSE · Physics · Light — Reflection and Refraction · Light — Reflection and Refraction
Problem
Monochromatic light in air strikes a smooth slab of sapphire (index 1.77) at an angle of 35∘ measured from the normal to the surface.
Complete the tasks below. Unless otherwise requested, express all final numeric answers to the nearest tenth of a degree.
(a) Calculate the angle the beam makes with the normal while inside the sapphire.
(b) Express the internal angle found in part (a) as an angle measured relative to the surface of the sapphire.
(c) Compute the ratio sinθairsinθin using your angles from parts (a) and (b), and interpret the physical meaning of this ratio.