An experimental setup consists of a (550-mathrm{nm}) laser, a screen at a distance of (0.50 mathrm{~m}), and

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An experimental setup consists of a \(550-\mathrm{nm}\) laser, a screen at a distance of \(0.50 \mathrm{~m}\), and an adjustable-width single slit. At what slit width is the width of the central maximum of the interference pattern the same as that of the bright spot it would make in the absence of diffraction? In other words, for what slit width are the effects of wave optics and geometric optics comparable?

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