1.

Polarising angle for water is 53^(@). If light is incident at polarising angle on the surface of water and is partly reflected, the angle of refraction will be

Answer»

`53^(@)`
`37^(@)`
`127^(@)`
`30^(@)`

SOLUTION :When light is incident at the polarising angle then REFLECTED and refracted waves TRAVEL in MUTUALLY perpendicular directions and hence angle of refraction`=90^(@)-i_(p)=90^(@)-53^(@)=37^(@)`.


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