7. A helium-cadmium laser emits blue light at a wavelength of 441.6 nm. Assume this light is incident on a diffraction grating of 5500 lines per centimeter. Determine the angle at which one would observe the second order maximum. A. 12° B. 19° C. 29° D. 42°

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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.