The signature of an unknown element has a unique green color (550nm) in its emission spectra. You grabbed 4 sets of diffraction grating that would let you see this color. As you shine a light towards the element and into the diffraction grating, the color you expected appears at an angle of 20°. If the color is from a second-order spectra, which one did you use? a. 620 slits/mm grating b. 311 slits/mm grating c. 207 slits/mm grating d. 155 slits/mm grating

The signature of an unknown element has a unique green color (550nm) in its emission spectra. You grabbed 4 sets of diffraction grating that would let you see this color. As you shine a light towards the element and into the diffraction grating, the color you expected appears at an angle of 20°. If the color is from a second-order spectra, which one did you use? a. 620 slits/mm grating b. 311 slits/mm grating c. 207 slits/mm grating d. 155 slits/mm grating

University Physics Volume 3

17th Edition

ISBN:9781938168185

Author:William Moebs, Jeff Sanny

Publisher:William Moebs, Jeff Sanny

Chapter3: Interference

Section: Chapter Questions

Problem 63AP: A hydrogen gas discharge lamp emits visible light at four wavelengths, =410 , 434, 486, and 656 nm....

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