A light ray in water passes into air. The angle of incidence in the water is 40°. What is the angle of refraction in air if the index of refraction of water is 1.33?
A)59°
B)0.59°
C)40°
D)1.33°
E)29°

Question

Quizplus · Accepted Answer

Using Snell's Law, n1 * sin(θ1) = n2 * sin(θ2), where n1 = 1.33 (water), θ1 = 40°, and n2 = 1 (air). Solving for θ2 gives sin(θ2) = 1.33 * sin(40°), which results in θ2 ≈ 59°.

A Light Ray in Water Passes into Air