3. In a TV tube an electric potential difference accelerates electrons from a rest position towards a screen. Just before reaching the screen, the electrons have a wavelength of 1.2 × 10-1'm. Determine the kinetic energy of the electrons just before they reach the screen. Your final answer should have units of eV.

3. In a TV tube an electric potential difference accelerates electrons from a rest position towards a screen. Just before reaching the screen, the electrons have a wavelength of 1.2 × 10-1'm. Determine the kinetic energy of the electrons just before they reach the screen. Your final answer should have units of eV.

Physics for Scientists and Engineers with Modern Physics

10th Edition

ISBN:9781337553292

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter41: Atomic Physics

Section: Chapter Questions

Problem 34P

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Concept explainers

Compton effect

The incoming photons' energy must be in the range of an X-ray frequency to generate the Compton effect. The electron does not lose enough energy that reduces the wavelength of scattered photons towards the visible spectrum. As a result, with visible lights, the Compton effect is missing.

Recoil Velocity

The amount of backward thrust or force experienced by a person when he/she shoots a gun in the forward direction is called recoil velocity. This phenomenon always follows the law of conservation of linear momentum.

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3. In a TV tube an electric potential difference accelerates electrons from a rest position towards a
screen. Just before reaching the screen, the electrons have a wavelength of 1.2 x 10-1"m.
Determine the kinetic energy of the electrons just before they reach the screen. Your final
answer should have units of eV.

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