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AP EAMCET · PHYSICS · Wave Optics

The central fringe in the interference pattern obtained in Young's double slit experiment will be a dark fringe when the phase difference between the waves from the two slits is

  1. A zero
  2. B \(\frac{\pi}{2}\)
  3. C \(\pi\)
  4. D \(\frac{\pi}{3}\)
Verified Solution

Answer & Solution

Correct Answer

(C) \(\pi\)

Step-by-step Solution

Detailed explanation

When the central fringe in the interference pattern in YDSE be a dark fringe, then path difference, will be \(\frac{\lambda}{2}\). i.e., \(\Delta x=\frac{\lambda}{2}\) \(\therefore\) Phase difference,…