Where does the spot of light hit the bottom of the pool?
In searching the bottom of a pool at night, a watchman shines a narrow beam of light from his flashlight, h = 1.5 m above the water level, onto the surface of the water at a point L = 2.8 m from the edge of the pool (Fig. 23-50). Where does the spot of light hit the bottom of the pool, measured from the wall beneath his feet, if the pool is 2.1 m deep?
____ m
Take the inverse tangent of (2.8/1.5) to get the first angle. Using snells law find the 2nd angle:
(1)(first angle)=(1.33)(second angle). do 2.1*tan(second angle) to get the disntance. But for the final step, add your L, so add 2.8 to the distance you solved for in order to get the final answer.
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