Question

In Young’s double slit experiment, if the monochromatic source of yellow light is replaced by red light, the fringe width
(a) increases
(b) decreases.
(c) remains unchanged.
(d) the fringes disappear

Answer 1

Answer:

hope the answer will help you ☺❤

Answer 2

Answer:

So if monochromatic light in Young's double-slit experiment is replaced by white light, then the waves of every wavelength form their separate interference patterns. ... Hence the waves of all colors reach a middle point R in the same phase. So the central fringe is white.