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MHT CET202014 Oct 2020Morning ShiftPhysicsWave OpticsActual

Two coherent sources of intensities l ₁ and I ₂ produce an interference pattern on screen. The maximum intensity in the interference pattern is

Options

  1. A[ I ₁ + I ₂ ]²
  2. BI ₁+ I ₂
  3. C( I ₁+ I ₂ )²
  4. DI ₁²+ I ₂²

Correct answer

A. [ I ₁ + I ₂ ]²

Step-by-step solution

Intensity is proportional to square of the amplitude. I a ² I a Maximum intensity is produced when the two amplitudes get added (phase difference is 2 n ). I _ ( a ₁+ a ₂ )² or I _ ( I ₁+ I ₂ )²

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