AP Physics 2
14.8 Double-Slit Interference and Diffraction Gratings
14.7 Diffraction
Monochromatic light of wavelength \(\lambda\) is incident normally on a barrier containing two identical parallel slits, each of width \(a\). The center-to-center separation between the two slits is \(d = 3a\). The resulting intensity pattern is observed on a distant viewing screen. Which of the following correctly states whether the third-order (\(m = 3\)) double-slit interference bright fringe is observed on the screen and provides the correct physical reasoning?
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