An Oil Layer That Is 5

question 15

Multiple Choice

An oil layer that is 5.0 cm thick is spread smoothly and evenly over the surface of water on a windless day.What is the angle of refraction in the water for a ray of light that has an angle of incidence of 45° as it enters the oil from the air above? (The index of refraction for the oil is 1.15,and for water it is 1.33.)

• A) 27°
• B) 32°
• C) 36°
• D) 39°
• E) 52°

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