Question

What is the angle between reflected ray and refracted ray when angle of incidence is equal to angle of polarization?

• A. \( 90^\circ \)
• B. \( 0^\circ \)
• C. \( 30^\circ \)
• D. \( 120^\circ \)

Hint:

At the angle of polarization, the reflected and refracted rays are always perpendicular, forming a \( 90^\circ \) angle between them.

Answer 1

The Correct Option is A

Step 1: Understanding the concept.
The angle of polarization is the angle of incidence at which light is perfectly polarized upon reflection. When the angle of incidence is equal to the angle of polarization, the reflected and refracted rays are perpendicular to each other, which results in a \( 90^\circ \) angle between them.
Step 2: Analyzing the options.
(1) \( 90^\circ \): Correct. At the angle of polarization, the reflected and refracted rays are perpendicular.
(2) \( 0^\circ \): This is incorrect. A \( 0^\circ \) angle would suggest no difference between the reflected and refracted rays.
(3) \( 30^\circ \): This is incorrect. This is not the angle between the reflected and refracted rays at the angle of polarization.
(4) \( 120^\circ \): This is incorrect. The angle between the reflected and refracted rays at the angle of polarization is \( 90^\circ \).
Step 3: Conclusion.
The correct answer is (1) \( 90^\circ \), as the reflected and refracted rays are perpendicular to each other at the angle of polarization.