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(Solved): Light from a heliumneon laser (\lambda = 630nm) is incident on a diffraction grating and then il ...



Light from a helium–neon laser (\lambda = 630nm) is incident on a diffraction grating and then illuminates a screen that is 7 m away. If the bright diffraction fringes near \theta = 0 are spaced 0.7 m apart, what is the spacing between the slits in the grating?



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