1.

A person finds that the sun rays reflected by the still surface of water in a lake are polarized. If the refractive index of water is 1.327 the sun will be seen at the angle of .... with the horizon

Answer»

`57^(@)`
`75^(@)`
`37^(@)`
`53^(@)`

Solution :
Using Brewster.s law.
`N= tan theta_(p)`
`1.327= tan theta_(p)`
`:. theta_(p)=53^(@)`
ANGLE made by the sun with the HORIZON
`=90^(@)-theta_(p)`
`=90^(@)-53^(@)`
`=37^(@)`


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