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A diffraction pattern is obtained by making blue light incident on a narrow slit. If blue light is replaced by red light then

Options

  1. Athere is no change in diffraction pattern.
  2. Bdiffraction band become broader.
  3. Cdiffraction bands become broader.
  4. Ddiffraction bands become narrower.

Correct answer

C. diffraction bands become broader.

Step-by-step solution

The correct option is (C). Concept Based: The width of the diffraction bands is directly proportional to the wavelength thus, a minor broadening is observed.

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