When laser light is passed through two narrow slits separated by 143 µm, an interference pattern is observed on a screen 1.51 m away. The distance between the central spot and the first-order constructive interference is found to be 4.8 mm. Part (a)  Find the wavelength of the laser light, in nanometers.  Part (b)  At what angle, in degrees, from the central spot is the second-order constructive interference formed?

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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.