Monochromatic light from a He- Ne laser (lambda = 632.8 nm) is incident on a diffraction grating containing 5000 lines/cm. Determine the angle of the first- order maximum. 13.9° 27.7° 39.2° 14.6° 18.4°

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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.