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

Question

Quizplus · Accepted Answer

Brewster's angle can be calculated using the formula $\tan(\theta_B) = n_2/n_1$, where $n_2$ is the refractive index of the second medium (usually air, $n_2 = 1$) and $n_1$ is the refractive index of Lucite. Using the critical angle formula $\sin(\theta_c) = n_2/n_1$, we find $n_1$ and then calculate Brewster's angle.

The Critical Angle for Lucite Is 41.8∘41.8^{\circ}41.8∘ What Is Brewster's Angle for Lucite? A)

The Critical Angle for Lucite Is $41.8^{\circ}$ What Is Brewster's Angle for Lucite?
A)