You are out to prove the photoelectric effect for yourself. You use a metal with a known binding energy of 2.09 eV, but you have no idea what the wavelength of your incident light is. You measure a stopping voltage for the electrons of 2.6 V. a) What is the maximum kinetic energy, in J, of the electrons ejected from the metal? ev b) What is the wavelength of the incident light? c) What is the longest wavelength that would cause an electron to be ejected from the same metal with a binding energy of 2.09 eV?

You are out to prove the photoelectric effect for yourself. You use a metal with a known binding energy of 2.09 eV, but you have no idea what the wavelength of your incident light is. You measure a stopping voltage for the electrons of 2.6 V. a) What is the maximum kinetic energy, in J, of the electrons ejected from the metal? ev b) What is the wavelength of the incident light? c) What is the longest wavelength that would cause an electron to be ejected from the same metal with a binding energy of 2.09 eV?

Modern Physics

3rd Edition

ISBN:9781111794378

Author:Raymond A. Serway, Clement J. Moses, Curt A. Moyer

Publisher:Raymond A. Serway, Clement J. Moses, Curt A. Moyer

Chapter3: The Quantum Theroy Of Light

Section: Chapter Questions

Problem 20P

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