Question:
Consider the arrangement shown in figure. The distance $D$ is large compared to the separation $d$ between the slits.
(a) Find the minimum value of $d$ so that there is a dark fringe at $O$.
(b) Suppose $d$ has this value. Find the distance $x$ at which the next bright fringe is formed.
(c) Find the fringe-width.
Solution:
Click here to get exam-ready with eSaral
For making your preparation journey smoother of JEE, NEET and Class 8 to 10, grab our app now.