In a double-slit experiment, monochromatic light is used to produce interference fringes on a screen. The distance between the slits and the screen is 1.50 m. The bright fringes are separated by 0.30 cm. If the screen is moved so that it is 1.0 m from the slits, the average distance between adjacent dark fringes will be a) 0.20cm b) 0.30cm c) 0.45 cm d) 0.67 cm

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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.