Q. If the monochromatic source in Young’s double slit experiment is replaced by white light, then
A) there will be a central bright white fringe surrounded by a few coloured fringes.
B) all bright fringes will be of equal width.
C) interference pattern will disappear.
D) there will be a central dear fringe surrounded by a few coloured fringes.
Explanation
[Solution by Claude - not from source] With white light the central fringe is white (all colours in phase) and a few coloured fringes appear on either side before the pattern washes out. Answer (1).
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.