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When light of a certain wavelength is incident on a plane surface of a material at a glancing angle 30^@, the reflected light is found to be completely plane polarized Determine Refractive index of given material. |
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Answer» Solution :Angle of incident light with the surface is `30^(@)`. The angle of incidence `=90^(@)-30^(@)= 60^(@)`. Since reflected light is completely polarized, THEREFORE incidence takes place POLARIZING angle of incidence `theta_p`. `theta_(p)= 60^(@)` Using Brewster.s law `mu = TAN theta_(p)= tan 60^(@)"", mu = SQRT(3)`. |
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