JEE · NEET Previous Year Question
A diffraction pattern is obtained by using a beam of red light. If the red light is replaced by the blue light
Topic: JEE PYQ
Answer: A. Full step-by-step solution below.
- Abands will be narrower
- Bbands become broader
- Cno change in the width of the bands takes place
- Dbands disappear
Correct answer: A
Solution
(a) The width of the fringe in diffraction, Hence, when the red light is replaced by blue light, the wavelength decreases which means that the fringe width decreases and band will be narrower.More Wave Optics PYQs
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