Question

What will you observe if violet monochromatic light is replaced by a red monochromatic light in young double slit experiment

Answer 1

Answer:

Explanation:

White light consists of waves of inumerable wavelengths starting from violet to red colour. Therefore if monochromatic light in Young's interference experiment is replaced by white light, then the waves of each wavelength form their separate interference patterns. ... Therefore the central fringe (at M) is white.

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.