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An unpolarized light beam travelling in air is incident on a medium of refractive index 1.73 at Brewster's angle. Then -

Options

  1. Areflected light is completely polarized and the angle of reflection is close to 60^
  2. Breflected light is partially polarized and the angle of reflection is close to 30^
  3. Cboth reflected and transmitted light are perfectly polarized with angles of reflection and refraction close to
  4. Dtransmitted light is completely polarized with angle of refraction close to 30^

Correct answer

A. reflected light is completely polarized and the angle of reflection is close to 60^

Step-by-step solution

When unpolarised light is incident on a medium of refractive index 1.73 at Brewster's angle then reflected light is completely polarised. Using Brewster's Law aligned & = (i_p ) & 1.73= (i_p ) & i_p=60^ aligned By Law of reflection, i_p=r=60^

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