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JEE Main 2026 Apr 5 Shift 1, Physics Q14: Young’s Double Slit Experiment

JEE Main2026Apr 5, Shift 1Physics
Q.

In Young's double slit experiment, the fringe width of the interference pattern produced on the screen is m. If the experiment is carried out in another medium having refractive index 1.2, the fringe width will be ______ m.

  1. A

    1.2

  2. B

    2

  3. C

    2.4

  4. D

    2.88

Solution

The wavelength inside a medium of refractive index is , so the fringe width becomes .

m.

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