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AP EAMCET202316 May 2023Evening ShiftPhysicsWave OpticsActual

A diffraction pattern is obtained by using a beam of red light. If the red light is replaced by the blue light

Options

  1. Abands will be narrower
  2. Bbands become broader
  3. Cno change in the width of the bands takes place
  4. Dbands disappear

Correct answer

A. bands will be narrower

Step-by-step solution

The width of the fringe in diffraction, = D d Hence, when the red light is replaced by blue light, the wavelength decreases which means that the fringe width decreases and band will be narrower.

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