1. The problem statement, all variables and given/known data A single slit illuminated by light of wavelength λ = 610 nm produces a diffraction pattern with its first minimum at 3.5 mm from the central maximum. (a) Find the slit width, and (b) For the same slit, what wavelength of light would produce a first minimum at θ = 4.0 degrees. 2. Relevant equations D = slit width m = minima order L = distance from the slit to the wall D sin θ = m λ tan θ = sin θ = θ (small angle approximation) 3. The attempt at a solution λ = 610 nm or 6.1 x 10^-7 m m = 1 (first order minima) x = 3.5 mm (which is the distance from the central maximum to the first minimum) tan θ = x / L D = m λ / sin θ I would be able to solve this question if I was given either the distance from the slit to the wall (L) or the angle (θ), however, I am not given any of this, and as such, I am unsure how to proceed.