A Young’s double slit interference arrangement with slits
S1 and
S2is immersed in water (refractive index =
43) as shown in the figure.
![](https://search-static.byjusweb.com/question-images/byjus/infinitestudent-images/ckeditor_assets/pictures/9518/content_193368.png)
The position of maxima on the surface of water are given by
x2=p2m2λ2−d2, where
λ is the wavelength of light in air (refractive index = 1), 2d is the separation between the slits and m is an integer. The value of p is