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MHT CET20226 Aug 2022Evening ShiftPhysicsWaves and SoundActual

The optical path difference between two identical light waves arriving at a point is 31.5 , where is the wavelength of light used. The point is [Given: Two light sources are coherent]

Options

  1. Aalternative bright and dark.
  2. Bdark.
  3. Cbright.
  4. Dneither bright nor dark.

Correct answer

B. dark.

Step-by-step solution

Path difference x=(63) 2 , which is an odd multiple of the half wavelength. Therefore, it is a dark point or the point of destructive interference.

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