Question

When light is incident from air to crown glass, the angle of incidence is 24.00°. What is the angle of refraction? Note that the refractive index of air is 1.00 and that of crown glass is 1.52.

Answer 1

The angle of refraction in the crown glass is 15.5°.

Explanation:

known values

angle of incidence (θ1) = 24.00

refractive index of air (n1) = 1.00

refractive index of crown glass (n2) = 1.52

unknown value: angle of refraction (θ2)

Snell’s law equation: n1 sin θ1 = n2 sin θ2

Substitute known values in this equation to get

(1)(sin 24°) = (1.52)(sin θ2)

sin θr = 0.27

θr = 15.5°

The angle of refraction in the crown glass is 15.5°.