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KCET2023PhysicsWave Optics

An unpolarised light of intensity I is passed through two polaroids kept one after the other with their planes parallel to each other. The intensity of light emerging from second polaroid is I 4 . The angle between the pass axes of the polaroids is

Options

  1. A45^
  2. B0^
  3. C60^
  4. D30^

Correct answer

A. 45^

Step-by-step solution

The given situation is shown in the figure. According to law of Malus, aligned I^ & = ( I 2 ) ^2 I 4 & = I 2 ^2 ^2 & = 1 2 & = 1 2 & =45^ aligned

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