A double slit apparatus illuminated through a monochromatic source. The slits width 18.1 µm, and the screen is around 2.500 m from the slits. The intensity of the 0 (zero) order fringe is around 2800 and the intensity of first order fringe is 2500, distance to the first order fringe from the 0 order fringe is 0.015 m.
Determine the wavelength of the light falling on the slits.