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Refraction of light, Snell's law

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A flashlight on the bottom of a 3.73 m deep swimming pool sends a ray upward at an angle so that the ray strikes the surface of the water 1.82 m from the point directly above the flashlight. What angle (in air) does the emerging ray make with the water's surface?

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Solution Summary

The angle of refraction of a ray of light from water to air is calculated.

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