Three discrete spectral lines occur at angles of 10.2°, 13.8°, and 15.0°, respectively, in the first-order spectrum of a diffraction grating spectrometer. (a) If the grating has 3740 slits/cm, what are the wavelengths of the light? ?1 = answer nm (10.2°) ?2 = answer nm (13.8°) ?3 = answer nm (15.0°) (b) At what angles are these lines found in the second-order spectra? ? = answer ° (?1) ? = answer ° (?2) ? = answer ° (?3)

Three discrete spectral lines occur at angles of 10.2°, 13.8°, and 15.0°, respectively, in the first-order spectrum of a diffraction grating spectrometer. (a) If the grating has 3740 slits/cm, what are the wavelengths of the light? ?1 = answer nm (10.2°) ?2 = answer nm (13.8°) ?3 = answer nm (15.0°) (b) At what angles are these lines found in the second-order spectra? ? = answer ° (?1) ? = answer ° (?2) ? = answer ° (?3)

Physics for Scientists and Engineers: Foundations and Connections

1st Edition

ISBN:9781133939146

Author:Katz, Debora M.

Publisher:Katz, Debora M.

Chapter35: Diffraction And Interference

Section: Chapter Questions

Problem 68PQ

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