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 oil is 1.15, and for water it is 1.33.)
A) 25.6°
B) 38.6°
C) 27.2°
D) 35.5°
E) 32.1°

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The Answer of 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 oil is 1.15, and for water it is 1.33.)
A) 25.6°
B) 38.6°
C) 27.2°
D) 35.5°
E) 32.1°

An Oil Layer That Is 5