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MHT CET20244 May 2024Morning ShiftPhysicsWave OpticsActual

Three identical polaroids P₁, P₂ and P₃ are placed one after another. The pass axis of P ₂ and P₃ are inclined at an angle 60^ and 90^ with respect to axis of P ₁ . The source has an intensity I₀ . The intensity of transmitted light through P₃ is ( 60^ =0.5, 30^ = 3 2 )

Options

  1. AI ₀ 8
  2. B3 I₀ 16
  3. C3 I ₀ 32
  4. DI ₀ 32

Correct answer

C. 3 I ₀ 32

Step-by-step solution

According to Malus' law, I = I ₀ ^2 When beam passed through P ₁ , I = I ₀ 2 When beam passed through P ₂ , aligned I ₂ & = I ₀ 2 ^2 60^ I ₂ & = I ₀ 8 aligned When beam passed through P ₃ , I ₃= I ₀ 8 ^2 30^ = I ₀ 8 ( 3 2 )^2= 3 I ₀ 32

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