Light in air strikes a transparent phate of an unknownmaterial at an angle of in

Question

Light in air strikes a transparent phate of an unknownmaterial at an angle of incidence of 60 degrees. Part of the beamis reflected and part refracted. A measurement shows that theangle between the reflected and refracted beams is 90 degrees witheach other. What is the index of refraction of the material? Light in air strikes a transparent phate of an unknownmaterial at an angle of incidence of 60 degrees. Part of the beamis reflected and part refracted. A measurement shows that theangle between the reflected and refracted beams is 90 degrees witheach other. What is the index of refraction of the material?

Explanation / Answer

the angle between the reflected and refracted beams is 90degrees with each other. that is angle of incidence is equal to angle ofpolarisation So, angle of polarisattion P = 60 degrees So, index of refraction n = tan P                                       =1.732

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