Diamond has an index of refraction of 2.419. What is the critical angle for internal reflection inside a diamond that is in air?
A) 48.8°
B) 131°
C) 24.4°
D) 155°

Question

Quizplus · Accepted Answer

The critical angle can be calculated using the formula: critical angle = arcsin(1/n), where n is the index of refraction. For diamond, n = 2.419, so the critical angle = arcsin(1/2.419) ≈ 24.4°.

Diamond Has an Index of Refraction of 2