The critical angle for Lucite is 41.8°. What is Brewster's angle for Lucite?
A) 33.7°
B) 26.3°
C) 48.2°
D) 56.3°
E) Brewster's angle does not exist for this material

Question

Quizplus · Accepted Answer

Brewster's angle can be calculated using the formula: tan(θ_B) = n2/n1, where n1 is the refractive index of the first medium (usually air, n1 ≈ 1) and n2 is the refractive index of Lucite. The critical angle is related to the refractive index by sin(θ_c) = n1/n2. Using the critical angle of 41.8°, we can find n2 and then calculate Brewster's angle, which is approximately 56.3°.

The Critical Angle for Lucite Is 41