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A two-slit interference set-up with slit separation d = 0.10 mm produces interference fringes at a particular set of angles θm (where m = 0.1, 2, ...) for red light of frequency f = 4.6 × l014 Hz. If one wishes to construct an analogous two-slit interference set-up that produces interference fringes at the same set of angles θm, for room-temperature sound of middle-C frequency fS = 262 Hz, what should the slit separation dS be for this analogous set-up?
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