Visible light passes through a diffraction grating that has 900 slits/cm and the interference pattern is observed on a screen that is 2.76 m from the grating. you may want to review (pages 1197 - 1201) . for related problem-solving tips and strategies, you may want to view a video tutor solution of width of a grating spectrum. part a is the angular position of the first-order spectrum small enough for sinθ≈θ to be a good approximation? is the angular position of the first-order spectrum small enough for to be a good approximation? yes no request answer