Please refer to the  Figure  which shows the pattern of interference fringes for light of wavelength 609 nm passing through two narrow slits, projected onto a screen a distance of 2.27 m away. The distance on the screen between the centers of two adjacent bright fringes is 1.42 cm. What is the distance between the two slits?     7.79E-05 m   9.74E-05 m   1.75E-04 m   1.27E-04 m

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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.