1.

Unpolarised light is incident on a plane surface heaving refractive index sqrt3. The angle of incidence at which reflected and refracted rays would become perpendicular to each other is

Answer»

<P>`15^(@)`
`30^(@)`
`45^(@)`
`60^(@)`

SOLUTION :Hint : REFLECTED and refracted rays are mutually perpendicular when ANGLE of incident is the polarizing angle i.e., `i=i_(p)=tan^(-1)(n)=tan^(-1)(sqrt3)=60^(@).`


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