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AP Physics 2
14.8 Double-Slit Interference and Diffraction Gratings
IntermediateMCQProportional AnalysisConceptual19.4k
A horizontal schematic showing a narrow beam of white light traveling from left to right. The beam strikes a vertical diffraction grating with slit spacing d at normal incidence. To the right of the grating, a vertical screen shows a central white spot labeled m = 0. Above and below the central spot, first-order spectra labeled m = 1 extend along the screen. No other labels, lines, text, or axes appear.
White light incident on a diffraction grating forming spectra on a screen.
A beam of white light is directed at normal incidence onto a diffraction grating with slit separation details specified by spacing \(d\). The light passes through the grating and produces a central maximum alongside dispersed visible spectra on a screen located at a distance \(L\) away. In the first-order diffraction spectrum (\(m = 1\)), which color of visible light appears at the greatest distance from the central maximum, and why?

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