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:
AIEEE Solevd Paper-2013
A)points
B)straight lines
C)semi−circles
D)concentric circles
Correct Answer:
D
Solution :
So, on a circle, path difference will be same locus of points having same path difference will be a circle, so fringes will make concentric circles.