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A horizontal laser beam of wavelength 632.8 nm has a circular cross section 2.00 mm in diameter. A rectangular aperture is to be placed in the center of the beam so that the light falls perpendicularly on a wall 4.50 m away, the central maximum fills a rectangle 110 mm wide and 6 mm high. The dimensions are measured between the minima bracketing the central maximum. Find the rehired height and width of the aperture.

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