Problem 3: Double-slit experiment The monochromatic lightdiffracts on the two slits which are 0.1 mm apart (their size isnegligible) and produces an interference pattern on the wall whichis 3 m far from the apparatus.
a) The distance between the central bright fringe and the firstoff-center bright fringe is 2 cm. What is the wavelength of thelight? Which color is it?
b) How many bright and dark fringes could we see on thewall?
c) We change the film with slits and the distance betweenadjacent dark fringe and bright fringe is 7 mm. What is thedistance between two slits now?
