Unpolarised light is is incident from air on a plane surface of a material of refractive index . 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 ?
Reflected light is polarised with its electric vector perpendicular to the plane of incidence
Reflected light is polarised with its electric vector parallel to the plane of incidence
As we have learned
Relation between angle of incidence and angle of refaction -
- wherein
refractive index of medium of incidence.
refractive index of medium where rays is refracted.
angle of incidence.
angle of refraction.
Apply snells law
also
or
also reflected light is polarized with its electric field perpendicular to plane of incidence
Option 1)
This is incorrect
Option 2)
Reflected light is polarised with its electric vector perpendicular to the plane of incidence
This is incorrect
Option 3)
Reflected light is polarised with its electric vector parallel to the plane of incidence
This is incorrect
Option 4)
This is correct