Suppose you stand in a swimming pool and look down at your toes and find that they appear to be 0.75 m below the water's surface. How deep is the water?

The index of refraction of water is n = 1.33 

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	0.56 m
	0.75 m
	1.0 m
	1.25 m

(c) 2002, Doug Davis; all rights reserved