Red light of wavelength 633 nm from a helium- neon laser passes through a slit 0.390 mm wide. The diffraction pattern is observed on a screen 2.85 m away. Define the width of a bright fringe as the distance between the minima on either side. Part A What is the width of the central bright fringe? Hν ΑΣφ ? m Submit Request Answer Part B What is the width of the first bright fringe on either side of central one? ? m

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