An Innovative Physics Professor Conducts Laboratory Exercises in the College

An innovative physics professor conducts laboratory exercises in the college swimming pool. The professor places a submersible laser under water (n = 1.33) and aims the beam at a crystal, which is also under water. The reflected beam is found to be totally polarized when the angle of incidence of the beam is 57 degrees. What is the index of refraction of the crystal?

A) 1.17
B) 1.12
C) 1.54
D) 2.05

Correct Answer:

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