Aray of light in air is incident on a flat piece of glass at an angle of î¸ = 54â° with respect to the surface. the glass has index of refraction n= 1.8. what is the angle of the refracted ray?

26.7°

Explanation:

Angle of incidence, i = 54°

refractive index of glass with respect to air, n = 1.8

Let r be the angle of refraction.

By use of Snell's law

By substituting the values, we get

Sin r = 0.449

r = 26.7°

Thus, the angle of refraction in the glass is 26.7°