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Question: Answered & Verified by Expert
The polarizing angle of glass is \( 57^{\circ} \). A ray of light which is incident at this angle will have an
angle of refraction as
PhysicsWave OpticsKCETKCET 2015
Options:
  • A $25^{\circ}$
  • B \( 33^{\circ} \)
  • C \( 43^{\circ} \)
  • D \( 38^{\circ} \)
Solution:
2640 Upvotes Verified Answer
The correct answer is: \( 33^{\circ} \)
Given, polarising angle of glass, \( i_{p}=57^{\circ} \)
We know that, when the light is incident at polarising angle then reflected and refracted rays are at right angles to each
other.
Therefore,
\[
r=90^{\circ}-i_{p}=90-57=33^{\circ}
\]
Therefore, angle of refraction is \( 33^{\circ} \).

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