The critical angle for a transparent material is the angle at and beyond which all light within the material is
A) absorbed.
B) dispersed.
C) refracted.
D) diffused.
E) reflected.

Question

Quizplus · Accepted Answer

The critical angle is the angle of incidence above which all light is totally internally reflected within a material, rather than being refracted out of it. This means that beyond the critical angle, all the light is reflected back into the material.

The Critical Angle for a Transparent Material Is the Angle