Q. Red light is generally used to observe diffraction pattern from single slit. If blue light is used instead of red light, then diffraction pattern
A) Will be more clear
B) Will contract
C) Will expanded
D) Will not be visualized
Explanation
(b) $\lambda_{Blue} < \lambda_{Red}$. Therefore fringe pattern will contract because fringe width $\propto \lambda$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.