Q188 / 225 · JEE Main 2004 · Physics

The angle of incidence at which reflected light totally polarized for reflection from air to glass (refractive index $n$ ), is

  • A
    $\sin ^{-1}(n)$
  • B
    $\sin ^{-1}(1 / n)$
  • C
    $\tan ^{-1}(1 / n)$
  • Correct answer
    D
    $\tan ^{-1}(n)$

Solution

Brewster's law: According to this law the ordinary light is completely polarised in the plane of incidence when it gets reflected from transparent medium at a particular angle known as the angle of polarisation. $$ \mathrm{n}=\tan \mathrm{i}_{\mathrm{p}} $$

Hence, the correct answer is option: 'D'.

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