a diffraction grating is illuminated by monochromatic light of wavelength 660 nm what is the number of lines per cm on the grating so that only two maximum are produced a) 15000 b) 3000 c) 5000 d) 7500

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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.