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When light of particular wavelength fall...

When light of particular wavelength falls on a plane surface at an angle of incidence `60^(@)` then the reflected light becomes completely plane polarised Find the refractive index of surface material and the angle of refraction through it.

Text Solution

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Using Brewster's law `mu=tan theta_(P)=tan 60^(@)=sqrt(3)`
At this condition `theta_(P)+theta_(r)=90^(@)`
`thetha_(r)=90^(@)-60^(@)`
Angle of refraction `theta_(r)=30^(@)`
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