Q. In Young’s double slit experiment if monochromatic light used is replaced by white light, then
A) No fringes are observed
B) Only central fringe is white, all other fringes are coloured
C) All bright fringes become white
D) All bright fringes have colours between violet and red
Explanation
(b) In Young’s double slit experiment if white light is used instead of monochromatic light, then we shall get a white fringe at the centre surrounded on either side with some coloured fringes, with violet fringe in the beginning and red fringe in the last.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.