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Essential University Physics: Volume 2 (3rd Edition)
3rd Edition
ISBN: 9780321976420
Author: Richard Wolfson
Publisher: PEARSON
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Question
Chapter 34, Problem 50P
(a)
To determine
The work function of the emitting surface.
(b)
To determine
The original wavelength of the
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Students have asked these similar questions
Molybdenum has a work function of 4.20 eV. (a) Find the cutoff wavelength and cutoff frequency for the photoelectric effect. (b) What is the stopping potential if the incident light has a wavelength of 180 nm?
When ultraviolet light with a wavelength of 400.0 nm falls on a certain metal surface, the
maximum kinetic energy of the emitted photoelectrons is measured to be 1.10 eV. (a) What is
the work function of the metal surface? (b) What is the maximum kinetic energy of the
photoelectrons when light of wavelength 300.0 nm falls on the same surface?
The photoelectric threshold wavelength of a tungsten surface
is given as 256 nm. Calculate the maximum kinetic energy of
electrons ejected by ultraviolet radiation with a frequency of
1.47 x 1015 Hz from the tungsten surface. (Express your
answer in terms of electron volts.)
Chapter 34 Solutions
Essential University Physics: Volume 2 (3rd Edition)
Ch. 34.2 - Prob. 34.1GICh. 34.3 - If you replot Fig. 34.7 for a material with a...Ch. 34.3 - Prob. 34.3GICh. 34.4 - Prob. 34.4GICh. 34.5 - Prob. 34.5GICh. 34.6 - Prob. 34.6GICh. 34 - Prob. 1FTDCh. 34 - Prob. 2FTDCh. 34 - Prob. 3FTDCh. 34 - Prob. 4FTD
Ch. 34 - Prob. 5FTDCh. 34 - Prob. 6FTDCh. 34 - Prob. 7FTDCh. 34 - Prob. 8FTDCh. 34 - Prob. 9FTDCh. 34 - Prob. 10FTDCh. 34 - Prob. 11FTDCh. 34 - Prob. 12FTDCh. 34 - Prob. 13FTDCh. 34 - Prob. 14FTDCh. 34 - Prob. 15ECh. 34 - The surface temperature of the star Rigel is 104K....Ch. 34 - Prob. 17ECh. 34 - Prob. 18ECh. 34 - Prob. 19ECh. 34 - Prob. 20ECh. 34 - Prob. 21ECh. 34 - Prob. 22ECh. 34 - Prob. 23ECh. 34 - Prob. 24ECh. 34 - Prob. 25ECh. 34 - Prob. 26ECh. 34 - Prob. 27ECh. 34 - Prob. 28ECh. 34 - Prob. 29ECh. 34 - Prob. 30ECh. 34 - Prob. 31ECh. 34 - Prob. 32ECh. 34 - Prob. 33ECh. 34 - Prob. 34ECh. 34 - Prob. 35ECh. 34 - Prob. 36ECh. 34 - Prob. 37ECh. 34 - Prob. 38PCh. 34 - Prob. 39PCh. 34 - Prob. 40PCh. 34 - Prob. 41PCh. 34 - Prob. 42PCh. 34 - Prob. 43PCh. 34 - Prob. 44PCh. 34 - Prob. 45PCh. 34 - Prob. 46PCh. 34 - Prob. 47PCh. 34 - Prob. 48PCh. 34 - Prob. 49PCh. 34 - Prob. 50PCh. 34 - Prob. 51PCh. 34 - Prob. 52PCh. 34 - Prob. 53PCh. 34 - Prob. 54PCh. 34 - Prob. 55PCh. 34 - Prob. 56PCh. 34 - Prob. 57PCh. 34 - Prob. 58PCh. 34 - Prob. 59PCh. 34 - Prob. 60PCh. 34 - Prob. 61PCh. 34 - Prob. 62PCh. 34 - Prob. 63PCh. 34 - Prob. 64PCh. 34 - Prob. 65PCh. 34 - Prob. 66PCh. 34 - Prob. 67PCh. 34 - Prob. 68PCh. 34 - Prob. 69PCh. 34 - Prob. 70PCh. 34 - Prob. 71PCh. 34 - Prob. 72PCh. 34 - Prob. 73PCh. 34 - Prob. 74PCh. 34 - Prob. 75PCh. 34 - Prob. 76PCh. 34 - Prob. 77PCh. 34 - Prob. 78PCh. 34 - Prob. 79PCh. 34 - Prob. 80PCh. 34 - Prob. 81PCh. 34 - Prob. 82PCh. 34 - Prob. 83PCh. 34 - Prob. 84PPCh. 34 - Prob. 85PPCh. 34 - Prob. 86PPCh. 34 - Prob. 87PP
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- The work function of a photoelectric surface is 2.00 eV. What is the maximum speed of the photoelectrons emitted from this surface when a 450-nm light falls on it?arrow_forwardWhat is the maximum kinetic energy of photoelectrons ejected from sodium by the incident radiation of wavelength 450 nm?arrow_forwardA 600-nm light falls on a photoelectric surface and electrons with the maximum kinetic energy of 0.17 eV are emitted. Determine (a) the work function and (b) the cutoff frequency of the surface. (c) What is the stopping potential when the surface is illuminated with light of wavelength 400 nm?arrow_forward
- In a beam of white light (wavelengths from 400 to 750 nm), what range of momentum can the photons have?arrow_forwardThe work function for cesium is 1.9 eV, the lowest of any metal. (a) Find the threshold frequency and wavelength for the photoelectric effect. Find the stopping potential if the wavelength of the incident light is (b) 300 nm and (c) 400 nm.arrow_forwardThe photoelectric threshold wavelength of a tungsten surface is given as 256 nm. Calculate the maximum kinetic energy of the electrons ejected by 1.47 x 1015 Hz frequency ultraviolet radiation from the tungsten surface. (Express your answer in terms of electron volts.)arrow_forward
- The work function for potassium is 2.24 eV. If potassium metal is illuminated with light of wavelength 350 nm, find (a) the maximum kinetic energy of the photoelectrons and (b) the cutoff wavelengtharrow_forward(a) What minimum-frequency light will eject photons from a copper surface? f = Hz (b) If this frequency is multiplied by 4.1, find the maximum kinetic energy (in eV) of the resulting photoelectrons. KEmax = eVarrow_forwardAn experiment is performed where light of different frequencies is shined on an iron plate. The work function for iron is 4.50 eV. (a) What is the lowest frequency (the "cutoff" frequency, in Hz) of light incident on iron, below which no photoelectrons will be emitted from its surface? Hz (b) What is the longest wavelength (the "cutoff" wavelength, in nm) of light incident on iron, above which no photoelectrons will be emitted from its surface? nm (c) Photons of energy 6.30 eV are incident on the iron plate. What is the maximum kinetic energy (in eV) of the ejected photoelectrons? ev Need Help? Read Itarrow_forward
- An experiment is performed where light of different frequencies is shined on an iron plate. The work function for iron is 4.50 eV. (a) What is the lowest frequency (the "cutoff" frequency, in Hz) of light incident on iron, below which no photoelectrons will be emitted from its surface? Hz (b) What is the longest wavelength (the "cutoff" wavelength, in nm) of light incident on iron, above which no photoelectrons will be emitted from its surface? nm (c) Photons of energy 5.73 eV are incident on the iron plate. What is the maximum kinetic energy (in eV) of the ejected photoelectrons? eVarrow_forwardThe photoelectric work function of the emitter of a photoelectric cell is 2 eV. When emitter is irradiated by monochromatic light of certain wavelength, the photoelectric current can just be reduced to zero by applying a stopping potential of 1.5 V. Find the wavelength of incident light.arrow_forward(a) A photoelectric experiment is performed where green light with a wavelength of 546.1 nm is shined on a metal plate, creating a photocurrent from it to a collector plate. When the potential difference between the metal plate and the collector is increased to a magnitude of 0.686 V, the photocurrent goes to zero—in other words, this is the stopping potential. What is the work function (in eV) for this metal? answer in eV (b) The experiment is performed again with the same metal, but now red light with a wavelength 650.0 nm is shined on it. What is the new stopping potential (in V) in this case? answer in Varrow_forward
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