Coherent light with wavelength 606 nanometer passes through two very narrow slits, and the interference pattern is observed on a screen a distance of 3 meter from the slits. The first-order bright fringe is a distance of 4.84 millimeter from the center of the central bright fringe.
Part A: Obtain for what wavelength of light will the first-order dark fringe (the first dark fringe next to a central maximum) be observed at this same point on the screen? Express your answer in micrometers (not in nanometers).