A spotlight on a boat is 25 m above the water and the light, Ask an Expert

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A spotlight on a boat is 2.5 m above the water, and the light strikes the water at a point that is 8.0 m horizontally displaced from the spotlight (see the drawing). The depth of the water is 4.0m. Decide the distance d, which locates the point where the light strikes the bottom. Suppose water has a refraction index of 1.333.

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