(c) The stopping potential depends on the incident photon intensity.(d) The stopping potential depends on the incident photon wavelength. 3.8. Which of the following statements is false for photoelectric effect?(a) The stopping potential depends on the incident photon frequency(b) The stopping potential depends on the incident photon energy.4

Answered: Image /qna-images/answer/f205d0aa-522f-4dda-bd24-00915ff0cde1.jpg

Answered: (c) The stopping potential depends on…

University Physics Volume 3

17th Edition

ISBN:9781938168185

Author:William Moebs, Jeff Sanny

Publisher:William Moebs, Jeff Sanny

Chapter6: Photons And Matter Waves

Section: Chapter Questions

Problem 66P: The work function for potassium is 2.26 eV. What is the cutoff frequency when this metal is used as...

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If a photon of wavelength 0.0665 nm hits a free electron and is scattered at an angle of 35◦ from its original direction, findat. the change in wavelength of this photon,b. the wavelength of the scattered photon,vs. the change in energy of the photon (is it a loss or a gain?), and d. the energy gained by the electron.
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The attatched equation describes the cross section for the photoionization of a hydrogen atom in quantum state n by a photon of wavelength λ. What is the photoionization cross section for a 13.6 eV photon on hydrogen? (Provide an answer in megabarns. A barn is a unit of area commonly used in particle physics that's 10-28 m2).
Problem 4 (2 ...us): When light with a wavelength of 400 nm strikes a certain metal surface, the maximum kinetic energy of the emitted photoelectrons is measured to be 1.10 eV. a. (ts) What is the work function of the metal? b.ts) If light of wavelength 300 nm strikes the same metal surface, what is the shortest possible deBroglie wavelength of the emitted photoelectrons? (The electron speed is much slower than the speed of light.)
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When a beam of 10.6 eV photons of intensity 2.0 W/m² falls on a platinum surface of area 1.0 x104 m² and work function 5.6 eV, 0.53% of the incident photons eject photo electrons. Find the number of photoelectrons emitted per second and their minimum and maximum energies (in eV). J. Take 1 eV =1.6 x 10-19
Ex3/ For what wavelength of incident photon it shows Compton scattering in which the energy of scattered photon is one-half that of incident photon at a scattering angle of 45°? In what region of the electromagnetic spectrum does such a photon lie? *17. Using branch-current analysis, find the current through each resistor for the network of Fig. 8.119. The resistors are all standard values. 3.3 kN R2 2.2 kN 5.6 kN R3 + E, - 40 V EE 15 V E; 25 V MixGram
Which of the following statements are true? Choose all that apply. A photon has kinetic energy. O Electrons have a positive charge. If photon A has a larger momentum than photon B, photon A must be moving faster than photon B. Hotter objects have a larger peak frequency. Increasing the light intensity on a piece of metal will increase the maximum KE of the ejected electrons (assuming f > fo). If an electron drops down to the ground state, a photon will be emitted.
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1.2. When a photoelectric cell with a copper cathode is illuminated by a Hg arc lamp, with wavelength 245 nm, the reverse potential across the cell (i.e. the voltage that just stops the fastest emitted electrons) is measured to be 0.181 V. Calculate the work function and threshold frequency of copper.
Lithium is used in a photoelectric effect experiment. If its work function is 2.95 eV, what frequency of light is the threshold frequency? Describe what happens to the electrons (in terms of energy and speed) if light with higher frequency strikes the lithium instead.
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