In a double slit experiment there are two plane monochromatic waves incident on the slits. One wavelength is red with lamba= 600.0 nm, the other is not known. The distance between the slits is 0.150 mm and the screen is 2.50 m from the slits.
(a) Plot the intensity pattern you would observe on the screen from the red source and label the zeroth and 3rd order fringe properly.
(b) Calculate the linear separation of the red fringes.
(c) The 3rd maxima of the red source is observed to lie exactly on the 4th maxima of the unknown. Calculate the unknown wavelength