Problem 13:  Light with a wavelength of λ = 640 nm is incident on a single slit of width w = 4.75 micrometers. A screen is located L = 0.45 m behind the slit and an interference pattern has formed on it. What is the distance between the central bright spot and the first dark fringe, D, in meters?

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Diffraction of light

In physics, the term diffraction is defined as the bending of light around the corners of the obstacle. As a light ray passes by an aperture, it bends around the edges or through slits, it spreads out through a narrow opening. The diffracted light will produce fringes of bright and dark or colored bands which are labeled as a diffraction pattern.