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The refractive index of water is 4/3 and...

The refractive index of water is 4/3 and that of glass 3/2. A beam of light travelling in wter enters glass. For what angle of incidence the refected light will be completely plane-polarised? (than `48^(@)22` = 1.125)

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SL ARORA-WAVE OPTICS-Based on Intensity Distribution in interference pattern
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