The back wall of a home aquarium is a mirror that is a distance of 49.0 cm away

Question

The back wall of a home aquarium is a mirror that is a distance of 49.0 cm away from the front wall. The walls of the tank are negligibly thin. A fish, swimming midway between the front and back walls, is being viewed by a person looking through the front wall. The index of refraction of air is nair = 1.000 and that of water is nwater = 1.333. (a) Calculate the apparent distance between the fish and the front wall. (b) Calculate the apparent distance between the image of the fish and the front wall.

Explanation / Answer

apparent = n2/n1 real a ) apparent = 24.5 / 1.333 = 18.37 cm b) apparent = (49 + 24.5) / 1.333 = 55.13 cm

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