In a Fraunhofer diffraction at a single slit, if yellow ligh... | Physics | SolveeIt | Solveeit

Today, August 18

Question

In a Fraunhofer diffraction at a single slit, if yellow light illuminating the slit is replaced by blue light, then diffraction bands

A

Remain unchanged

B

Become wider

C

Disappear

D

Become narrower

Answer

Become narrower

Explanation

Solution

When blue light is used instead of yellow, $\lambda$ decreases and hence diffraction bands become narrower.