State the dispersion of a diffraction grating

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The dispersion of a diffraction grating, such as the one shown at the right, is the angle of separation per Î¼m of wavelength, Î"Î¦ /Î"Î». It depends on the order of the diffraction (n), the distance between grooves (d) and the angle of the emerging light (Î¦).

Calculate the dispersion at Î¦ = 11 ° of the first order diffraction for a grating with 8.0 Ã- 102 grooves per centimeter. Give the answer in °/Î¼m.

Reference no: EM13173704

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