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CBSE Class 12 · 2024 · Wave OpticsMultiple Choice

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In a Young's double slit experiment in air, the fringe width is found to be mm. If the entire setup is immersed in water , the fringe width will be
  1. (A)0.88 mm
  2. (B)0.59 mm
  3. (C)0.33 mm✓ Correct
  4. (D)0.44 mm

Answer: (C)

Solution

On immersing the apparatus in water the wavelength reduces to , so the fringe width reduces by the same factor:

CBSE Class 12 Board · 2024 · Single correct option

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