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Unpolarized light is incident from air o...

Unpolarized light is incident from air on a plane surface of a material of refractive index `'mu'`. At a particular angle of incidence `'I'`, it is found that the reflected and refracted rays are perpendicular to each other.
Which of the following options is correct for this situation?

A

`i = sin^(-1) (1/(mu))`

B

Reflected light is polarised with the electric vector perpendicular of the plane of incidence.

C

Reflected light is polaried with its electric vector parallel to the plane of incidence.

D

`i = tan^(-1) (1/(mu))`

Text Solution

Verified by Experts

The correct Answer is:
B
Reflected and refraced rays are perpendicular to each other hence light ray is incident at polarising angle and reflected light must be polarised and we sould know that electric vector of polarised light is perpendicular to plane of incidence. From Brewster.s law, angle of incidence can be written as
`i_p = tan^(-1) (mu)`
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