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)

University Physics Volume 2

18th Edition

ISBN:9781938168161

Author:OpenStax

Publisher:OpenStax

Chapter16: Electromagnetic Waves

Section: Chapter Questions

Problem 72P: How many helium atoms, each with a radius of about 31 pm, must be placed end to end to have a length...

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