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A light of wavelength 6500 A0 falls normally on a grating surface. The first order spectrum is obtained

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by (98.9k points) in Engineering Physics 2 384 views
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A light of wavelength 6500 Ao falls normally on a grating surface. The first order spectrum is obtained at 19.5o from the normal. Calculate the grating element.

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grating element is 1.947*10-4cm


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