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- The light reflecting off the goldfish bends away
- from the normal as it leaves the water. Therefore,
- the boy sees the fish as being farther away from the
- wall than it actually is.
- The question asks for the distance d between the
- fish's apparent and actual positions. First, it is
- necessary to find the angle of the light after it has
- left the water:
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- If the light leaving the fish actually formed a 56.3¬°
- with the normal, the fish would have to be located a
- distance from the edge of the pond:
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