1. The problem statement, all variables and given/known data A monochromatic plane wave is normally incident on a diffraction grating with 105 lines/m. For what visible wavelengths would this grating produce a maximum at 11°. 2. Relevant equations d*sinθ = m*λ 3. The attempt at a solution d = 1 x 10-5 m I don't get how to actually solve it because i don't know what the m for this situation would be.