Consider a ray of light passing bet

Consider a ray of light passing between two media of different refractive indexes n1 and n2 as shown in figure
3. If n1 > n2 the light ray as it passes from one media to the next will bend away from an imaginary line (the normal)
perpendicular to the media’s mating surface. Conversely if n1 < n2 then the ray will bend towards the normal. Total
internal reflection occurs when n1 > n2 and the incident ray of light makes an angle, Θc, such that it does not enter the
adjacent medium but travels along the interface. At angles greater than Θc the ray will be reflected back into medium
A.
Material