JEE · NEET Previous Year Question

In Young's double - slit experiment if yellow light is replaced by blue light, the interference fringes become

Topic: JEE PYQ

Answer: C. Full step-by-step solution below.

  1. Awider
  2. Bbrighter
  3. Cnarrower
  4. Ddarker

Correct answer: C

Solution

(c) : Fringe width,
If we replace yellow light with blue light, i.e., longer wavelength with shorter one, therefore the fringe width decreases.

More Wave Optics PYQs