Select the correct statement.

  • A
    If the Brewster's angle for the light propagation from air to glass is $\theta$, then the Brewster's angle for the light propagating from glass to air is $(\frac{\pi}{2} - \theta)$.
  • B
    The Brewster's angle for the light propagating from the glass to air is $\tan^{-1}(\frac{1}{\mu})$, where $\mu$ is the refractive index of glass.
  • C
    If the Brewster's angle for light propagating from air to glass is $\theta$, then the Brewster's angle for the light propagating from glass to air is $(\pi + \theta)$.
  • D
    The Brewster's angle for light propagating from glass to air is $\tan(\mu)$, where $\mu$ is the refractive index of glass.

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

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$A$ person lives in a high-rise building at a height of $30 \ m$ on the bank of a river. Across the river is a well-lit tower of height $60 \ m$. When the person looks through a polarizer at an appropriate angle at light from the top of the tower reflecting from the river surface,he finds the intensity of light is least. If the refractive index of water is $\frac{4}{3}$,the width of the river is ...... $m$.

At what angle of incidence,the light reflected from a glass slab will become completely polarised,if the angle of refraction at that incident angle is $33.6^{\circ}$ (in $^{\circ}$)?

When an unpolarized light falls at a particular angle on a glass plate (placed in air), it is observed that the reflected beam is linearly polarized. The angle of the refracted beam with respect to the normal is . . . . . . . $(\tan ^{-1}(1.52)=57.7^{\circ}$, refractive indices of air and glass are $1.00$ and $1.52$, respectively) (in $^{\circ}$)

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