A light ray in air strikes a glass plate whose index of refraction is 1.42.Some of the light reflects off the surface of the plate,but most of it enters the glass.If the angle of refraction is one-half the angle of reflection,the angle of refraction is closest to which one of the following angles?
A)45°
B)43°
C)41°
D)39°
E)37°

Question

Quizplus · Accepted Answer

The angle of refraction is one-half the angle of reflection, so the angle of refraction is 30 degrees. The closest answer choice is 45 degrees.

A Light Ray in Air Strikes a Glass Plate Whose