College Physics
11th Edition
ISBN: 9781305952300
Author: Raymond A. Serway, Chris Vuille
Publisher: Cengage Learning
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Question
Chapter 27, Problem 9P
(a)
To determine
The work function of potassium.
(b)
To determine
The cutoff wavelength.
(c)
To determine
The frequency corresponding to the cutoff wavelength.
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When light of wavelength 3.50 x 102 nm falls on a potassium surface, electrons having a maximum kinetic energy of 1.31 eV are emitted. Find (a) the work function of potassium, (b) the cutoff wavelength, and (c) the frequency corresponding to the cutoff wavelength.
When light of wavelength 190 nm falls on a tungsten surface, electrons having a maximum kinetic energy of 2.03 eV are emitted. Find values for the following.(a) the work function of tungsten eV
(b) the cutoff wavelength nm
(c) the frequency corresponding to the cutoff wavelength Hz
When light of wavelength 120 nm falls on a carbon surface, electrons having a maximum kinetic energy of 5.35 eV are emitted. Find values for the following.
(a) the work function of carbon
eV
(b) the cutoff wavelength
nm
(c) the frequency corresponding to the cutoff wavelength
Hz
Chapter 27 Solutions
College Physics
Ch. 27.5 - Prob. 27.1QQCh. 27.5 - Prob. 27.2QQCh. 27.5 - Prob. 27.3QQCh. 27.6 - Prob. 27.4QQCh. 27.6 - Prob. 27.5QQCh. 27 - Prob. 1CQCh. 27 - Prob. 2CQCh. 27 - Prob. 3CQCh. 27 - Prob. 4CQCh. 27 - Prob. 5CQ
Ch. 27 - Prob. 6CQCh. 27 - Prob. 7CQCh. 27 - Prob. 8CQCh. 27 - Prob. 9CQCh. 27 - Prob. 10CQCh. 27 - Prob. 11CQCh. 27 - Prob. 12CQCh. 27 - Prob. 13CQCh. 27 - Prob. 14CQCh. 27 - Prob. 15CQCh. 27 - Prob. 16CQCh. 27 - Prob. 1PCh. 27 - Prob. 2PCh. 27 - Prob. 3PCh. 27 - Prob. 4PCh. 27 - Prob. 5PCh. 27 - Prob. 6PCh. 27 - Prob. 7PCh. 27 - Prob. 8PCh. 27 - Prob. 9PCh. 27 - Prob. 10PCh. 27 - Prob. 11PCh. 27 - Prob. 12PCh. 27 - Prob. 13PCh. 27 - Prob. 14PCh. 27 - Prob. 15PCh. 27 - Prob. 16PCh. 27 - Prob. 17PCh. 27 - Prob. 18PCh. 27 - Prob. 19PCh. 27 - Prob. 20PCh. 27 - Prob. 21PCh. 27 - Prob. 22PCh. 27 - Prob. 23PCh. 27 - Prob. 24PCh. 27 - Prob. 25PCh. 27 - Prob. 26PCh. 27 - Prob. 27PCh. 27 - Prob. 28PCh. 27 - Prob. 29PCh. 27 - Prob. 30PCh. 27 - Prob. 31PCh. 27 - Prob. 32PCh. 27 - Prob. 33PCh. 27 - Prob. 34PCh. 27 - Prob. 35PCh. 27 - Prob. 36PCh. 27 - Prob. 37PCh. 27 - Prob. 38PCh. 27 - Prob. 39PCh. 27 - Prob. 40PCh. 27 - Prob. 41APCh. 27 - Prob. 42APCh. 27 - Prob. 43APCh. 27 - Prob. 44APCh. 27 - Prob. 45APCh. 27 - Prob. 46APCh. 27 - Prob. 47APCh. 27 - Prob. 48APCh. 27 - Prob. 49APCh. 27 - Prob. 50APCh. 27 - Prob. 51APCh. 27 - Prob. 52AP
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- What is the de Brogue wavelength of a proton whose kinetic energy is 2.0 MeV? 10.0 MeV?arrow_forwardWhen light of wavelength 150 nm falls on a potassium surface, electrons having a maximum kinetic energy of 6.04 eV are emitted. Find values for the following. (a) the work function of potassium eV (b) the cutoff wavelength nm (c) the frequency corresponding to the cutoff wavelength Hzarrow_forwardWhen light of wavelength 350 nm falls on a potassium surface, electrons having a maximum kinetic energy of 1.31 eV are emitted. Find (a) the work function of potassium, (b) the cutoff wavelength, and (c) the frequency corresponding to the cutoff wavelengtharrow_forward
- When ultraviolet light with a wavelength of 400.0 nm falls on a certain metal surface, the maximum kinetic energy of the emitted electrons is measured to be 1.10eV. What is the maximum kinetic energy of the electrons in joules when light of wavelength 300.0 nm falls on the surface?arrow_forwardLight with wavelength i = 610 nm is incident on a metallic surface. Electrons are ejected from the surface. The maximum speed of these electrons is v = 4.40 x 105 m/s. (a) What is the work function of the metal (in ev)? ev (b) What is the cutoff frequency for this metal (in Hz)? Hzarrow_forwardWhen sodium metal is illuminated with light of wavelength 4.20 × 102 nm, the stopping potential is found to be 0.65V; when the wavelength is changed to 3.10 × 102 nm, the stopping potential is 1.69V. Using only these data and the values of the speed of light (? = 3 × 108 m/?) and the electronic charge (? = 1.602 × 10−19 C), find the work function of sodium and a value of the Planck’s constant.arrow_forward
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