In an interference experiment of the Young type, the distance between slits is 0.5 mm, and the wavelength of the light is 600 nm.
a. If it is desired to have a fringe spacing of 1 mm at the screen, what is the proper screen distance?
b. If a thin plate of glass (n = 1.50) of thickness 100 microns is placed over one of the slits, what is the lateral fringe displacement at the screen?
c. What path difference corresponds to a shift in the fringe pattern from a peak maximum to the (same) peak half-maximum?
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