Light with a wavelength of 600 nm (6x10^-7 m) strikes a single slit that is 0.5 mm (5 x 10^-4 m) wide. The diffraction pattern produced by the slit is observed on a wall a distance of 2.0 m from the slit.
a. What is the distance from the center of the pattern to the first dark fringe?
b. How wide is the central bright fringe of this diffraction pattern?