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MHT CET202123 Sep 2021Morning ShiftPhysicsWaves and SoundActual

Two beams of light having intensities I and 4 I interfere to produce a fringe pattern on a screen. The phase difference between the beams is / 2 at point A and at point B . Then the difference between the resultant intensities at A and B is

Options

  1. A4I
  2. B5I
  3. C2I
  4. D3I

Correct answer

A. 4I

Step-by-step solution

aligned & I _ A = I +4 I +2 I 4 I 2 =5 I & I _ B = I +4 I +2 I 4 I = I & I _ A - I _ B =5 I - I =4 I aligned

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