Schaum's Outline of College Physics, Twelfth Edition (Schaum's Outlines)
12th Edition
ISBN: 9781259587399
Author: Eugene Hecht
Publisher: McGraw-Hill Education
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Chapter 44, Problem 20SP
To determine
The longest wavelength of the photon that ejects an electron from
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Schaum's Outline of College Physics, Twelfth Edition (Schaum's Outlines)
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- Gaseous calcium atoms absorb light at 423, 272, and 240 nm. After a photon of 272 nm is absorbed from the ground state, a photon of wavelength 672 nm is emitted. After absorption of a photon of 240 nm occurs from the ground state, a photon is emitted of wavelength 504 nm. After the 504 nm photoemission occurs, what wavelength of light (in nm) would have to be emitted for an electron to return to the ground state? Construct an energy diagram to help.arrow_forwardWhich statement regarding the photoelectric effect is FALSE? Electrons can be ejected with energy of light used to strike the surface of the metals greater than the threshold energy. The current decreases with decreasing intensity of the light. The number of electrons ejected is proportional to the number of photons striking the metal surface. The wavelength limit sufficient for electron ejection is the same for all metals.arrow_forwardA ground-state H-atom (n = 1) first absorbs a photon with a wavelength of 95.0 nm and then emits a photon of 434 nm. What is the final state (n-value) for the electron?arrow_forward
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