When the distance d between the slits is relatively large, there will be numerous bright spots, called fringes. It can be shown that, for small angles (where sin() ≈ , with in radians), the distance between fringes is given by Δy = x/d. Using this result, find the wavelength of light (in nm) that produces fringes 7.50 mm apart on a screen 2.00 m from double slits separated by 0.110 mm