Question 408: Wave Optics

Question

Unpolarised 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?

Accepted Answer

If reflected and refracted light rays are
perpendicular, reflected light gets polarised with
electric field vector perpendicular to the plane of
incidence.
Also, tan i = $\mu $ (i = Brewster's angle)

Answer

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

Answer

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

Answer

$i = {\sin ^{ - 1}}\left( {{1 \over \mu }} \right)$

Answer

i = tan
-1
$\left( {{1 \over \mu }} \right)$

Wave Optics

Unpolarised 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?

Choose the correct answer: