1. The problem statement, all variables and given/known data Using a conventional two-slit apparatus with light of wavelength 540 nm, 33 bright fringes per centimeter are observed on a screen 3.8 m away. What is the slit separation? 2. Relevant equations m/x = (2*theta)/wavelength = number of fringes per meter interence maxima dsin(theta) =m*(wavelength) 3. The attempt at a solution i tried solving for theta then using that value to find slit separation d but i am totally confused.