A light beam is incident upon a still water surface.What is the maximum possible value for the angle of refraction? (n_water = 1.333). A)76.2° B)67.5° C)54.4° D)48.6°

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Quizplus · Accepted Answer

The maximum possible angle of refraction occurs when the incident angle is 90 degrees, which results in the refracted angle being equal to the critical angle. The critical angle can be found using Snell's Law: sin(critical angle) = n2/n1, where n1 is the refractive index of the first medium (air in this case) and n2 is the refractive index of the second medium (water in this case). Plugging in the given values, we get sin(critical angle) = 1/1.333, which corresponds to a critical angle of 48.6 degrees. Therefore, the maximum angle of refraction is also 48.6 degrees. The answer is D.

A Light Beam Is Incident Upon a Still Water Surface