An Innovative Physics Professor Conducts Laboratory Exercises in the College

Multiple Choice

An innovative physics professor conducts laboratory exercises in the college swimming pool.Suppose that one exercise was the measurement of the degree of polarization by bouncing laser light off a surface of a crystal.A laser bounced off the crystal surface is found to be perfectly polarized when the angle of incidence of the laser beam is 57 degrees from the vertical.What is the index of refraction of the crystal? It will help to recall that the index of refraction of water is 1.33.

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