In a two-slit interference experiment of the Young type, the aperture-to-screen distance is 2 m and the wavelength is 600 nm. If it is desired to have a fringe spacing of 1 mm, what is the required slit separation?
In the experiment of above, a thin plate of glass (n = 1.5) of thickness 0.05 mm is placed over one of the slits. What is the resulting lateral fringe displacement at the screen?