Physics, 06.05.2020 02:22, lachereyon11

A double-slit experiment is set up using red light (λ = 734 nm). A first-order bright fringe is seen at a given location on a screen.
What wavelength of visible light (between 380 nm and 750 nm) would produce a dark fringe at the identical location on the screen?

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A double-slit experiment is set up using red light (λ = 734 nm). A first-order bright fringe is seen...