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While studying physics at the library late one night, you
Chapter 26, Problem 67P(choose chapter or problem)
Problem 67P
While studying physics at the library late one night, you notice the image of the desk lamp reflected from the varnished tabletop. When you turn your Polaroid sunglasses sideways, the reflected image disappears. Tf this occurs when the angle between the incident and reflected rays is 110°, what is the index of refraction of the varnish?
Questions & Answers
QUESTION:
Problem 67P
While studying physics at the library late one night, you notice the image of the desk lamp reflected from the varnished tabletop. When you turn your Polaroid sunglasses sideways, the reflected image disappears. Tf this occurs when the angle between the incident and reflected rays is 110°, what is the index of refraction of the varnish?
ANSWER:
Step 1 of 2
Light from a lamp reflects off and refracts into the varnish on a tabletop. The angle between the incident and reflected rays is 
Since the reflected image disappears when the Polaroid sunglasses are turned sideways. this means that the reflected light is completely polarized parallel to the surface of the table, which also indicates that the light is incident at Brewster's angle on the surface of the table, where Brewster's angle is
