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MHT CET Medical202624 April 2026Evening ShiftPhysicsWave OpticsActual

When the un-polarised light beam is incident from air to glass (n = 1.5) at the Brewster's angle,

Options

  1. Areflected beam is polarized 50 % .
  2. Breflected and refracted beams are partially polarized.
  3. Creflected beam is polarized 100 % .
  4. Drefracted beam is polarized 100 %

Correct answer

C. reflected beam is polarized 100 % .

Step-by-step solution

According to Brewster's law, when an unpolarized light beam is incident on a transparent medium at the Brewster's angle, the reflected light is completely plane-polarized with its electric field vector perpendicular to the plane of incidence. The refracted light remains partially polarized. Therefore, the reflected beam is 100 % polarized. Answer: reflected beam is polarized 100 % .

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