Three discrete spectral lines occur at angles of 10.7°, 14.3°, and 14.6° in the first-order spectrum...

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Physics

Three discrete spectral lines occur at angles of 10.7°, 14.3°,and 14.6° in the first-order spectrum of a grating spectrometer.(Assume that the light is incident normally on the gratings.) (a)If the grating has 3 610 slits/cm, what are the wavelengths of thelight? (Enter your answers from smallest to largest.)

___________nm

___________nm

___________nm

(b) At what angles are these lines found in the second-orderspectrum? (Enter your answers from smallest to largest.)

____________°

____________°

____________°

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