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JEE Main 202431 JanuaryEvening Shift
Exam
JEE Main
Year
2024
Date
31 January
Shift
Evening Shift
Subject
Physics
Chapter
Wave Optics

JEE Main 2024 · 31 January · Evening Shift · Physics · Wave Optics

When unpolarized light is incident at an angle of 60 ° on a...

When unpolarized light is incident at an angle of 60°60 ° on a transparent medium from air. The reflected ray is completely polarized. The angle of refraction in the medium is

When unpolarized light is incident at an angle of 60 ° on a transparent medium from air. The reflected ray is

Options

  1. A30°30 °
  2. B60°60 °
  3. C90°90 °
  4. D45°45 °

Correct answer

A. 30°30 °

Step-by-step solution

When unpolarized light is incident at an angle of 60 ° on a transparent medium from air. The reflected ray is

By Brewster’s law at complete polarization, refracted ray and reflected ray are perpendicular to each other.

As angle of reflection will be =60°= 60 °. Therefore, angle of refraction will be =180°−60°−90°=30°= 180 ° - 60 ° - 90 ° = 30 °.

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