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Two polarisers P₁ and P₂ are placed in such a way that the intensity of the transmitted light will be zero. A third polariser P₃ is inserted in between P₁ and P ₂ , at the particular angle between P ₂ and P ₃ . The transmitted intensity of the light passing the through all three polarisers is maximum. The angle between the polarisers P ₂ and P ₃ is :

Options

  1. A4
  2. B6
  3. C8
  4. D3

Correct answer

A. 4

Step-by-step solution

Through P₂ I₁=I₀ ^2 ( 2 - ) I₁=I₀ ^2 Through P₃ I_ net = (I₀ ^2 ) ^2 I_ n c t = I₀ 4 [ (2 )]^2 for max I_ net =45^ So angle between P₂ and P₃= 4 Correct Ans. (1)

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