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Physics · PYQ NEET UG 2024

हिन्दी

If the monochromatic source in Young's double slit experiment is replaced by white light, then

  1. A
    there will be a central bright white fringe surrounded by a few coloured fringes.
  2. B
    all bright fringes will be of equal width.
  3. C
    interference pattern will disappear.
  4. D
    there will be a central dark fringe surrounded by a few coloured fringes.
View Answer & Solution

Correct answer · Option A

there will be a central bright white fringe surrounded by a few coloured fringes.

Explanation

At the central position, path difference is zero for all wavelengths, giving a central bright white fringe. Nearby fringes overlap at different positions according to their wavelengths, resulting in a few coloured fringes.

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