A light ray in air enters water at an angle of incidence of 40°. Water has an index of refraction of 1.33. The angle of refraction in the water is
A)59°.
B)29°.
C)40°.
D)0.59°.
E)1.33°.

Question

Quizplus · Accepted Answer

The angle of refraction can be calculated using Snell's Law: n1 * sin(θ1) = n2 * sin(θ2). Here, n1 = 1 (air), θ1 = 40°, n2 = 1.33 (water). Solving for θ2 gives approximately 29°.

A Light Ray in Air Enters Water at an Angle