Q. when monochromatic light is replaced by white light in Fresnel’s biprism arrangement, the central fringe is
A) Coloured
B) White
C) Dark
D) None of these
Explanation
(b) At the centre, all colours meet in phase, hence central fringe is white.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.