Monochromatic light illuminates a pair of thin parallel slits at normal incidence, producing an interference pattern on a distant screen. The width of each slit is 1/7 the center-to-center distance between the slits. Which interference maxima are missing in the pattern on the screen? every first will cancel every 3rd will cancel every 5th will cancel every 7th will cancel every 9th will cancel Im leaning towards the seventh but why does the maxima just disappear? Shoulnt the maxima still be a maxima?