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Diffraction Grating
A grating has a line density of 980 cm, and a screen perpendicular to the ray that makes the central peak of the diffraction pattern is 2.0 from the grating. If sight of two wavelengths, 620 m and 700
passes through the grating, what is the separation on the (flat) screen between the fifth-order maxima for the two wavelengths?
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