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The central bright fringe in a single slit diffraction pattern from light of wavelength 487 nm is 2.2 cm wide on a screen that is 1.05 m from the slit. (Define the width of a bright fringe as the linear distance from minimum to minimum.)

(a) How wide is the slit?

_______mm

(b) How wide is the first bright fringe on either side of the central bright fringe?

______cm

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