Ultraviolet light is incident normally on the surface of a certain substance. The binding energy of the electrons in this substance is 3.29 eV. The incident light has an intensity of 0.044 W/m2. The electrons are photoelectrically emitted with a maximum speed of 5.2x105 m/s. Assume the absorption of every photon ejects an electron.(c) Determine the total energy required to both eject the electron and give it a velocity of 5.2x105 m/s.(e) Determine the number of electrons ejected from 1 cm2 area in 1 s.

Light is made up of photons. When a light incident on a surface with the electrons, electrons absorb…

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Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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Ultraviolet light is incident normally on the surface of a certain substance. The binding energy of the electrons in this substance is 3.29 eV. The incident light has an intensity of 0.044 W/m². The electrons are photoelectrically emitted with a maximum speed of 5.2x10⁵ m/s. Assume the absorption of every photon ejects an electron.

(e) Determine the number of electrons ejected from 1 cm² area in 1 s.

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