NEET 2025 Physics question

If the monochromatic source in Young's double slit experiment is replaced by white light, then

(A)all bright fringes will be of equal width.
(B)interference pattern will disappear.
(C)there will be a central dark fringe surrounded by a few coloured fringes.
(D)there will be a central bright white fringe surrounded by a few coloured fringes.Correct

Answer: (D)

Solution

All colours have zero path difference at the centre, giving a white central maximum with coloured fringes beside it.

Question ID VK-014353