A fisherman, 1.8m tall, stands at the edge of a lake, being watched by a suspici

Question

A fisherman, 1.8m tall, stands at the edge of a lake, being watched by a suspicious trout who is some distance from the fisherman in the horizontal direction and a distance 47cm below the surface of the water. Use 1.35 as the index of refraction for water.

Part A

What is the angle of incidence of the light from the top of the fisherman's head on the surface of the water if the light hits the water a horizontal distance 4.21m from the shore?

66.9

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Correct

Part B

What is the angle of transmission of the light ray into the water?

42.9

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Correct

Part C

At what angle from the vertical does the fish see the top of the fisherman

66.9

Explanation / Answer

The fish sees the head at the same angle as the transmission angle of the light ray into the water, 42.9 degrees. [ANSWER, PART C]

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