A double-slit experiment is performed using a light wavelength 664 nm. The distance between the slits is 1.2 mm and the screen is located 2.50 m from the slit. Find the (a) angle that locates the third order dark fringe on the screen, (b) distance between the central bright fringe and the third order dark fringe, and (c) distance between the third order bright fringe and third order dark fringe.

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Q: wavelength

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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.