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

Options

  1. A30 °
  2. B60 °
  3. C90 °
  4. D45 °

Correct answer

A. 30 °

Step-by-step solution

By Brewster’s law at complete polarization, refracted ray and reflected ray are perpendicular to each other. As angle of reflection will be = 60 ° . Therefore, angle of refraction will be = 180 ° - 60 ° - 90 ° = 30 ° .

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