What is the distance between adjacent dark fringes when a light source with a wavelength of 642 nm is incident on a double-slit with a separation of 58 m if the interference pattern is projected onto a screen 1.3 m away? How far away is the sixth-order bright fringe to the left of the central maximum from the third-order bright fringe to the right of the central maximum? answer to the nearest tenth of a cm.