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09-02-2024
Physics

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A clear plastic paperweight with an unknown index of refraction rests on your desk as shown in the figure. A ray of light enters the top of the paper weight with a 79.0° angle of incidence and undergoes total internal reflection (TIR) at the right side of the paperweight. (a) Determine the minimum value for the index of refraction of the plastic for which TIR will occur.

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