In the figure, a laser positioned on a ship is used to communicate with a small two-man research submarine resting on the bottom of a lake
The laser is positioned 12 m above the surface of the water, and it strikes the water 20 m from the side of the ship. The water is 76 m deep and has an index of refraction of 1.33. How far horizontally is the submarine from the side of the ship?
A) 84.1 m
B) 64.1 m
C) 104 m
D) 74.1 m
E) 94.1 m
Answer: A
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