Question

In Young's double slit experiment, if the source of light changes from orange to blue then :

• A. the central bright fringe will become a dark fringe.
• B. the distance between consecutive fringes will decrease.
• C. the distance between consecutive fringes will increase.
• D. the intensity of the minima will increase.

Answer 1

Answer: (B)

Fringe width $=\lambda D/d$
as $\lambda$ decreases, fringe width also decreases