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categoryفيزياء schoolبكالوريوس event_available2026-07-13

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A double-slit interference pattern is produced with light of wavelength 550 nm passing through two slits. The slit widths are each 0.0600 mm, and the center-to-center slit separation is 0.150 mm. The screen is 2.00 meters away from the slits. [The pattern is a series of alternating bright and dark fringes, within a single-slit "diffraction envelope" which has maxima and minima from diffraction due to the slit widths.] (a) On the screen, what is the distance from the central bright fringe to the first bright fringe away from the center? (b) What is the distance from the central maximum to the first minimum of the diffraction envelope? (c) How many bright fringes appear between the first diffraction envelope (single slit pattern) minima to either side of the central maximum?

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