Question

When a light ray incidents on the surface of a medium, the reflected light is completely polarized. Then the angle between reflected and refracted rays is:

• A. 45°
• B. 90°
• C. 120°
• D. 180°

Hint:

The angle between the reflected and refracted rays is 90° when the light is completely polarized upon reflection. This occurs at Brewster's angle, a key concept in polarization of light.

Answer 1

The Correct Option is B

Step 1: Understand Brewster's Law.
When light undergoes complete polarization upon reflection, the angle between the reflected and refracted rays is 90°. This condition occurs at the Brewster angle \( \theta_B \), which is the angle of incidence at which the reflected light is completely polarized.
Step 2: Brewster's Angle Condition.
At the Brewster angle, the angle between the reflected and refracted rays is always 90° because the reflected and refracted rays are perpendicular to each other. Final Answer: The correct angle between the reflected and refracted rays is \( \boxed{90^\circ} \).