Red light of wavelength 633 nm from a helium-neon laser

Last updated: 7/10/2022

Red light of wavelength 633 nm from a helium-neon laser passes through a slit 0.330 mm wide. The diffraction pattern is observed on a screen 3.15 m away. Define the width of a bright fringe as the distance between the minima on either side. What is the width of the central bright fringe? Express your answer in meters. What is the width of the first bright fringe on either side of the central one? Express your answer in meters.