A beam of light travelling in air strikes a plate of
A beam of light, travelling in air, strikes a plate of transparent material at an angle of incidence of 56.0°. It is observed that the reflected and refracted beams form an angle of 90.0°. What is the index of refraction of this material?
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a beam of light travelling in air strikes a plate of transparent material at an angle of incidence of 560deg it is
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