Shape of fringes formed on screen will be-
This section requires Javascript.
You are seeing this because something didn't load right. We suggest you, (a) try
refreshing the page, (b) enabling javascript if it is disabled on your browser and,
finally, (c)
loading the
non-javascript version of this page
. We're sorry about the hassle.
The points on the screen having the same path difference will have the same intensity.
One of the definition of a hyperbola: For two given points, the foci, a hyperbola is the locus of points such that the difference between the distance to each focus is constant.
Therefore, the required pattern is hyperbolic.