How many dark fringes will be produced on either side of the central maximum if light (1 = 694 nm) is incident on a single slit that is 4.28 x 106 m wide? Number i UnitsLate one night on a highway, a car speeds by you and fades into the distance. Under these conditions the pupils of your eyes have diameters of about 6.7 mm.The taillights of this car are separated by a distance of 1.3 m and emit red light [wavelength = 643 nm in vacuum). How far away from you is this car when its taillights appear to merge into a single spot of light because of the effects of diffraction? db