The critical angle for glass in air if the glass has index of refraction 1.50 is
A)41.8°.
B)85.9°.
C)56.3°.
D)90°.
E)48.1°.

Name: The critical angle for glass in air if the glass has index of refraction 1.50 is A)41.8°. B)85.9°. C)56.3°. D)90°. E)48.1°.
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Question

Quizplus · Accepted Answer

The critical angle is given by sin(critical angle) = 1/n, where n is the index of refraction. For glass with n = 1.50, the critical angle is sin(critical angle) = 1/1.50 = 0.6667. Therefore, the critical angle is 41.8°.

The Critical Angle for Glass in Air If the Glass