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JEE Main202127 Jul 2021Morning ShiftPhysicsWave OpticsActual

In Young's double slit experiment, if the source of light changes from orange to blue then:

Options

  1. Athe central bright fringe will become a dark fringe.
  2. Bthe distance between consecutive fringes will decrease.
  3. Cthe distance between consecutive fringes will increase.
  4. Dthe intensity of the minima will increase.

Correct answer

B. the distance between consecutive fringes will decrease.

Step-by-step solution

Fringe width = λ D d . As λ decreases, fringe width also decreases.

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