Light with two different wavelengths, 632 nm and 474 nm, pass simultaneously through a single slit whose width is 7.15 X 10^-5 m and strike a screen 1.20 meters from the slit. To diffraction patters are formed on the screen. What is the distance between thommon center of the diffraction patterns and the first occurrence of a dark fringe from one pattern falling on top of a dark fringe from the other pattern?