Optics Ques 128
- Two coherent point sources $S _1$ and $S _2$ are separated by a small distance $d$ as shown. The fringes obtained on the screen will be
(2013 Main)
(a) points
(b) straight lines
(c) semi-circle
(d) concentric circles
Show Answer
Answer:
Correct Answer: 128.(d)
Solution:
- A fringe is a locus of points having constant path difference from the two coherent sources $S _1$ and $S _2$. It will be concentric circle.
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