Coherent light with wavelength 610 nm passes through two very narrow slits, and theinterference pattern is observed on a screen a distance of 3.00{\rm m} from the slits. the first-order bright fringe is adistance of 4.84 {\rm mm} from the center of the central bright fringe. for what wavelength of light will thefirst-order dark fringe be observed at this same point on thescreen? express your answer in micrometers(not in nanometers).