From Brewster's law, except for polished...

From Brewster's law, except for polished metallic surfaces, the polarising angle

depends on wavelength and is different for different colours

independent of wavelength and is different for different colours

independent of wavelength and is same for different colours

depends on wavelength and is same for different colours

Text Solution

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The correct Answer is:

As we know, according to Brewster's law,
`tan i = mu [{:("where ,i",= " Brewster angle"),(mu,=" refractive index")]:}`
So, we can say that polarising angle depends on wavelength and is different for different colours of light.

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Brewster's angle for water is

`43^(@)`

`57^(@)`

`45^(@)`

`53^(@)`

From Brewster's law of polarisation, it follows that the angle of polarisation depends upon

the wavelength of light

plane of polarisation's orientation

plane of vibration's orientation

none of the above

The polarising angle for glass is

same for different kinds of glass

different for different kinds of glass

same for light of all colours

varies with time