A laser beam is incident on two slits with separation d = 0.026 mm. A screen is placed L = 3.2 m from the slits. The wavelength of the laser light is λ = 5750 Å. θ1 and θ2 are the angles to the first and second bright fringes above the center of the screen. Part (a) Express sin(θ1) in terms of d and λ. Part (b) Express sin(θ2) in terms of d and λ. Part (c) Express the distance between the two bright fringes on the screen, y, in terms of θ1, θ2 and L. Part (d) Solve for the numerical value of y in meters.

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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.