Modern Physics For Scientists And Engineers
2nd Edition
ISBN: 9781938787751
Author: Taylor, John R. (john Robert), Zafiratos, Chris D., Dubson, Michael Andrew
Publisher: University Science Books,
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Chapter 4, Problem 4.26P
To determine
The change in wavelength of proton and to compare it with the change in wavelength of electron.
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Calculate the number of electrons required to to produce radiation at 590 nm, Ng90 having
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The work function for indium is 4.12 eV.
(d) If light of energy 7.14 eV is incident on indium, what is the maximum kinetic energy of the ejected photoelectrons? Give the answer in electron volts. eV
(e) For photons of energy 7.14 eV, what stopping potential would be required to arrest the current of photoelectron? V
The work function for aluminum is 4.08 eV. Ultraviolet light of wavelength 156 nm is incident on the clean surface of an aluminum sample.(a). What is the maximum kinetic energy of the ejected photoelectrons?(b). What stopping voltage would be required to arrest the current of photoelectrons?(c). Calculate the cut off frequency of aluminum.
Chapter 4 Solutions
Modern Physics For Scientists And Engineers
Ch. 4 - Prob. 4.1PCh. 4 - Prob. 4.2PCh. 4 - Prob. 4.3PCh. 4 - Prob. 4.4PCh. 4 - Prob. 4.5PCh. 4 - Prob. 4.6PCh. 4 - Prob. 4.7PCh. 4 - Prob. 4.8PCh. 4 - Prob. 4.9PCh. 4 - Prob. 4.10P
Ch. 4 - Prob. 4.11PCh. 4 - Prob. 4.12PCh. 4 - Prob. 4.13PCh. 4 - Prob. 4.14PCh. 4 - Prob. 4.15PCh. 4 - Prob. 4.16PCh. 4 - Prob. 4.17PCh. 4 - Prob. 4.18PCh. 4 - Prob. 4.19PCh. 4 - Prob. 4.20PCh. 4 - Prob. 4.21PCh. 4 - Prob. 4.22PCh. 4 - Prob. 4.23PCh. 4 - Prob. 4.24PCh. 4 - Prob. 4.25PCh. 4 - Prob. 4.26PCh. 4 - Prob. 4.27PCh. 4 - Prob. 4.28PCh. 4 - Prob. 4.29PCh. 4 - Prob. 4.30PCh. 4 - Prob. 4.31PCh. 4 - Prob. 4.32PCh. 4 - Prob. 4.33P
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- What is the maximum kinetic energy of photoelectrons ejected from sodium by the incident radiation of wavelength 450 nm?arrow_forwardCan the de Brogue wavelength of a particle be known exactly?arrow_forwardWhen a hydrogen atom is in its ground state, what are the shortest and longest wavelengths of the photons it can absorb without being ionized?arrow_forward
- Estimate the frequency of the KaX-ray from cesium.arrow_forwardA beam of ultraviolet light (100 nm - 400 nm) is incident on a silver plate of which the work function is 4.26 eV. b) A voltage is then applied to the plate. Determine the voltage required for stopping the photoelectrons produced by the light with wavelength longer than 200 nm from leaving the plate surface. (answer: -1.94V)arrow_forwardA photon collides with a stationary electron and makes an angle 60o after the collision. The final wavelength is 0.110 nm, calculate the initial wavelength.arrow_forward
- The work function for platinum is 6.35 eV. Ultraviolet light of wavelength 150 nm is incident on the clean surface of a platinum sample. We wish to predict the stopping voltage we will need for electrons ejected from the surface.(a) What is the photon energy of the ultraviolet light? (b) How do you know that these photons will eject electrons from platinum? (c) What is the maximum kinetic energy of the ejected photoelectrons? (d) What stopping voltage would be required to arrest the current of photoelectrons?arrow_forwardEstimate the binding energy of electrons in magnesium, given that the wavelength of 337 nm is the longest wavelength that a photon may have to eject a photoelectron from magnesium photoelectrode. Electrons are bound to the magnesium with potential depth of at least eV.arrow_forwardThe threshold wavelength for silver is 3800 A. Calculate the photoelectric work function for silver in eV.arrow_forward
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