Modern Physics
3rd Edition
ISBN: 9781111794378
Author: Raymond A. Serway, Clement J. Moses, Curt A. Moyer
Publisher: Cengage Learning
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Chapter 5, Problem 3Q
To determine
Check whether a proton or electron have greater wavelength provided under same potential difference.
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An electron and a proton, moving in opposite directions, are accelerated from rest through the same potential difference. Which particle has a longer wavelength?
An electron and a proton are accelerated from rest through potential differences of the same magnitude. Afterward, which particle has the larger de Broglie wavelength? Explain.
A scientist wants to use an electron microscope to observe details on the order of 0.25 nm.
Through what potential difference must the electrons be accelerated from rest so that they have a de Broglie wavelength of this magnitude?
Chapter 5 Solutions
Modern Physics
Ch. 5.1 - A 0.20-kg ball is thrown upward. How much work is...Ch. 5.5 - Prob. 5ECh. 5 - Prob. 1QCh. 5 - Prob. 2QCh. 5 - Prob. 3QCh. 5 - Prob. 4QCh. 5 - Prob. 5QCh. 5 - Prob. 7QCh. 5 - Prob. 8QCh. 5 - Prob. 9Q
Ch. 5 - Prob. 10QCh. 5 - Prob. 11QCh. 5 - Prob. 1PCh. 5 - Prob. 2PCh. 5 - Prob. 3PCh. 5 - Prob. 4PCh. 5 - Prob. 5PCh. 5 - Prob. 6PCh. 5 - Prob. 7PCh. 5 - Prob. 8PCh. 5 - Prob. 9PCh. 5 - Prob. 10PCh. 5 - Prob. 11PCh. 5 - Prob. 12PCh. 5 - Prob. 13PCh. 5 - Prob. 14PCh. 5 - Show that the group velocity for a nonrelativistic...Ch. 5 - Prob. 16PCh. 5 - Prob. 17PCh. 5 - Prob. 18PCh. 5 - Prob. 19PCh. 5 - Prob. 20PCh. 5 - Prob. 21PCh. 5 - Prob. 22PCh. 5 - Prob. 23PCh. 5 - Prob. 24PCh. 5 - Prob. 25PCh. 5 - Prob. 26PCh. 5 - Prob. 27PCh. 5 - Prob. 28PCh. 5 - Prob. 29PCh. 5 - Prob. 30PCh. 5 - Prob. 31PCh. 5 - Prob. 32PCh. 5 - Prob. 33PCh. 5 - Prob. 34PCh. 5 - Prob. 35PCh. 5 - Prob. 36PCh. 5 - Prob. 37P
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- What is the wavelength of an electron accelerated from rest in a 30.0-kV potential difference?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_forwardAt what velocity will an electron have a wavelength of 1.00 m?arrow_forward
- What is the de Brogue wavelength of an electron that is accelerated from rest through a potential difference of 20 keV?arrow_forward(a) Calculate the velocity of an electron that has a wavelength of 1.00 m. (b) Through what voltage must the electron be accelerated to have this velocity?arrow_forwardWhat is the de Brogue wavelength of a proton whose kinetic energy is 2.0 MeV? 10.0 MeV?arrow_forward
- An x ray with a wavelength of 0.103 nm collides with an electron that is initially at rest. The x ray's final wavelength is 0.14 nm. What is the final kinetic energy of the electron? Express your answer in Attojoules with zero decimal place.arrow_forward(X-Ray Production) Photons are accelerated from rest by a potential difference of 4.00 kV and strike a metal target. If a proton produces one photon on impact, what is the minimum wavelength of the resulting x rays? Why do x-ray tubes use electrons rather than protons to produce x rays?arrow_forwardAn x ray with a wavelength of 0.100 nm collides with an electron that is initially at rest. The electrons final wavelength is 0.110 nm. What is the final kinetic energy of the electron?arrow_forward
- As part of an electron diffraction experiment, electrons are accelerated from rest across a potential difference of 100 V. The beam of electrons is then directed at a diffraction grating with 1000 lines/mm, and the resulting pattern is detected on a phosphorescent screen 0.25 m away from the grating. a) whats the speed of the electrons as they reach the diffraction grating? b) whats the wavelength of the electrons? c) what is the distance at which one would observe the 2nd maxima on the screen, as measured from the central maxima?arrow_forward(a) If the wavelength of an electron is 5.33 x 10-7 m, how fast is it moving? 0.58 X Your response differs from the correct answer by more than 10%. Double check your calculations. km/s (b) If the electron has a speed equal to 5.00 x 106 m/s, what is its wavelength? marrow_forwardA sheet of metal is illuminated by photons with a wavelength of 325 nm and the emitted electrons are found to have a maximum kinetic energy of 1.25 eV. If the same metal is illuminated by 225 nm light, what will be the maximum speed of emitted electrons? Give your answer in km/s to 3 significant digits.arrow_forward
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