"Published in Newark, California, USA"
The water in a swimming pool is 6 m deep. How deep does it appear to a diver looking straight down into it?
Solution:
The given problem is about the refraction of light in which the incident ray and refracted ray are coincide with the normal line. To illustrate the problem, it is better to draw the figure as follows
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| Photo by Math Principles in Everyday Life |
From the Table of Index of Refraction, the index of refraction of water at 20°C is 1.333. Therefore, the apparent depth of a diver in a swimming pool is
