Question

When light is incident on a glass block at polarizing angle:

• A. Reflected ray is plane polarized.
• B. Reflected and refracted rays are perpendicular.
• C. Reflected and refracted rays are partially polarized.
• D. Refracted ray is partially polarized.

Answer 1

Answer: (A), (B), (D)

Refracted ray is partially polarized.

According to Brewster's law

When an unpolarized light is incident at a polarizing angle on a transparent medium, then the reflected light is completely polarized in a direction perpendicular to the plane of incidence.

The refracted light is a mixture of polarized light and unpolarized light i.e. partially polarized light.

And at polarizing angle reflected light and refracted light are perpendicular.


Hence, options $\left(\text{A}\right)$, $\left(\text{B}\right)$ and $\left(\text{D}\right)$ are correct.