Light with a wavelength of 400 nm strikes the surface of cesium in aphotocell, andthe maximum kinetic energy of the electrons ejected is 1.54 × 10-19 J. Calculate thework function of cesium and the longest wavelength of light that is capable of ejecting electrons from that metal.

Light with a wavelength of 400 nm strikes the surface of cesium in aphotocell, andthe maximum kinetic energy of the electrons ejected is 1.54 × 10-19 J. Calculate thework function of cesium and the longest wavelength of light that is capable of ejecting electrons from that metal.

Principles of Physics: A Calculus-Based Text

5th Edition

ISBN:9781133104261

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter28: Quantum Physics

Section: Chapter Questions

Problem 22P

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Light with a wavelength of 400 nm strikes the surface of cesium in aphotocell, andthe maximum kinetic energy of the electrons ejected is 1.54 × 10^-19 J. Calculate thework function of cesium and the longest wavelength of light that is capable of ejecting electrons from that metal.

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