Question: 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

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. If this occurs when the angle between the incident and reflected rays is 110°, what is the index of refraction of the varnish?

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