Optics Question 1128

Question: In Young’s double slit experiment, the central bright fringe can be identified

[KCET 2002]

Options:

A) By using white light instead of monochromatic light

B) As it is narrower than other bright fringes

C) As it is wider than other bright fringes

D) As it has a greater intensity than the other bright fringes

Show Answer

Answer:

Correct Answer: A

Solution:

When white light is used, central fringe will be white with red edges, and on either side of it, we shall get few coloured bands and then uniform illumination.



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