3 nm from a helium–neon laser shines on a pair of parallel slits separated by 1.27 ✕ 10−5 m and an interference pattern is observed on a screen 1.60 m from the plane of the slits. HINT (a) Find the angle (in degrees) from the central maximum to the first bright fringe.   Constructive

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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.