Modern Physics
3rd Edition
ISBN: 9781111794378
Author: Raymond A. Serway, Clement J. Moses, Curt A. Moyer
Publisher: Cengage Learning
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Question
Chapter 3, Problem 42P
(a)
To determine
The work function of the metal.
(b)
To determine
The observed stopping potential when using yellow light from a helium discharge tube.
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Two light sources are used in a photoelectric experiment to determine the work function for a particular metal surface. When green light from a mercury lamp (? = 546.1 nm) is used, a stopping potential of 0.838 V reduces the photocurrent to zero.
(a) Based on this measurement, what is the work function for this metal?answer in eV(b) What stopping potential would be observed when using light from a red lamp (? = 693.0 nm)?answer in V
The work function for titanium is 4.33 eV.
(a) Convert the value of the work function from electron volts to joules. J(b) Find the cutoff frequency for titanium. Hz(c) What maximum wavelength of light incident on titanium releases photoelectrons from the titanium's surface? nm(d) If light of energy 8.32 eV is incident on titanium, what is the maximum kinetic energy of the ejected photoelectrons? Give the answer in electron volts. eV(e) For photons of energy 8.32 eV, what stopping potential would be required to arrest the current of photoelectrons? V
The work function for gold is 5.10 eV.
(a) Convert the value of the work function from electron volts to joules. J(b) Find the cutoff frequency for gold. Hz(c) What maximum wavelength of light incident on gold releases photoelectrons from the gold's surface? nm(d) If light of energy 7.42 eV is incident on gold, what is the maximum kinetic energy of the ejected photoelectrons? Give the answer in electron volts. eV(e) For photons of energy 7.42 eV, what stopping potential would be required to arrest the current of photoelectrons? V
Chapter 3 Solutions
Modern Physics
Ch. 3.2 - Calculate the quantum number, n, for this pendulum...Ch. 3.2 - An object of mass m on a spring of stiffness k...Ch. 3 - Prob. 1QCh. 3 - Prob. 2QCh. 3 - Prob. 3QCh. 3 - Prob. 4QCh. 3 - Prob. 5QCh. 3 - Prob. 6QCh. 3 - Prob. 7QCh. 3 - Prob. 8Q
Ch. 3 - Prob. 9QCh. 3 - Prob. 10QCh. 3 - Prob. 11QCh. 3 - Prob. 1PCh. 3 - Prob. 2PCh. 3 - Prob. 3PCh. 3 - Prob. 4PCh. 3 - Prob. 5PCh. 3 - Prob. 6PCh. 3 - Prob. 7PCh. 3 - Prob. 8PCh. 3 - Prob. 9PCh. 3 - Prob. 10PCh. 3 - Prob. 11PCh. 3 - Prob. 12PCh. 3 - Prob. 13PCh. 3 - Prob. 14PCh. 3 - Prob. 15PCh. 3 - Prob. 16PCh. 3 - Prob. 17PCh. 3 - Prob. 18PCh. 3 - Prob. 19PCh. 3 - Prob. 20PCh. 3 - Prob. 21PCh. 3 - Prob. 22PCh. 3 - Prob. 23PCh. 3 - Prob. 24PCh. 3 - Prob. 25PCh. 3 - Prob. 26PCh. 3 - Prob. 27PCh. 3 - Prob. 28PCh. 3 - Prob. 29PCh. 3 - Prob. 30PCh. 3 - Prob. 31PCh. 3 - Prob. 32PCh. 3 - Prob. 33PCh. 3 - Prob. 34PCh. 3 - Prob. 35PCh. 3 - Prob. 36PCh. 3 - Prob. 37PCh. 3 - As a single crystal is rotated in an x-ray...Ch. 3 - Prob. 39PCh. 3 - Prob. 40PCh. 3 - Prob. 41PCh. 3 - Prob. 42PCh. 3 - Prob. 43PCh. 3 - Prob. 44PCh. 3 - Prob. 46PCh. 3 - Prob. 47PCh. 3 - Prob. 48P
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- In the interpretation of the photoelectric effect, how is it known that an electron does not absorb more than one photon?arrow_forwardEstimate the work function of aluminum, given that the wavelength of 304 nm is the longest wavelength that a photon may have to eject a photoelectron from aluminum photoelectrode.arrow_forwardThe work function of an unknown metal is 4.35 eV. What is the longest wavelength, in nanometers, of electromagnetic radiation that can eject a photoelectron from this metal?arrow_forward
- The work function for gold is 5.10 eV. (d) If light of energy 7.42 eV is incident on gold, what is the maximum kinetic energy of the ejected photoelectrons? Give the answer in electron volts. eV(e) For photons of energy 7.42 eV, what stopping potential would be required to arrest the current of photoelectrons? Varrow_forwardThe work function for nickel is 5.15 eV. (a) Convert the value of the work function from electron volts to joules. J(b) Find the cutoff frequency for nickel. Hz(c) What maximum wavelength of light incident on nickel releases photoelectrons from the nickel's surface? nm(d) If light of energy 8.68 eV is incident on nickel, what is the maximum kinetic energy of the ejected photoelectrons? Give the answer in electron volts. eV(e) For photons of energy 8.68 eV, what stopping potential would be required to arrest the current of photoelectrons? Varrow_forwardThe work function of a certain material is 4.9 eV. What is the photoelectric minimum (threshold) frequency for this material? A. 1.18 x 1015 Hz B. 2.23 x 1015 Hz C. 9.01 x 1014 Hz D. 3.48 x 1015 Hz E. 2.56 x 1015 Hzarrow_forward
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