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MHT CET202613 April 2026Morning ShiftPhysicsWave OpticsActual

Choose the correct statement from the following. Brewster's angle for a transparent medium is

Options

  1. Adifferent for light of different colours
  2. Bsame for lights of different colours
  3. Cindependent of refractive index of the medium
  4. Ddifferent for lights of same colour

Correct answer

A. different for light of different colours

Step-by-step solution

According to Brewster's law, the tangent of the polarizing angle (Brewster's angle) is equal to the refractive index of the medium. _B = The refractive index of a transparent medium depends on the wavelength of the incident light according to Cauchy's relation: = A + B ^2 + Since different colours of light have different wavelengths , the refractive index is different for different colours. Consequently, Brewster's angle _B is different for light of different colours. Answer: different for light of different colour

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