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NEET2002PhysicsWaves and SoundActual

What is the path difference for destructive interference?

Options

  1. An
  2. B(n+1) 2
  3. Cn( +1)
  4. D(2 n+1) 2 .

Correct answer

D. (2 n+1) 2 .

Step-by-step solution

If the waves interfere destructively, then path difference is given by 2 , 3 2 , 5 2 etc. Therefore path difference of a destructive interference is (2 n+1) 2 (where .n=1,2,3, ) etc.

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