Explanation 1) Concept: We can write the formula for maximum kinetic energy of electron ejected undergoing photoelectric effect . From this, we can conclude whether it depends on the intensity of the incident light beam. We can predict whether the maximum photoelectric current depends on the intensity of the incident light beam from whether the number of incident photons get increased. Then from the formulae for stopping potential and work function, we can predict whether the stopping potential and cut off frequency depend on the intensity of the incident light beam. 2) Formulae: i) K m a x = h f - ϕ ii) e V = h c λ - ϕ iii) ϕ = h f 0 3) Calculations: a) The maximum kinetic energy of the electrons: The maximum kinetic energy of electrons emitted due to photoelectric effect is given by K m a x = h f - ϕ … … … … … … … … . … … … … … … … … … … … … … … …

10th Edition

ISBN: 9781118230725

Author: David Halliday, Robert Resnick, Jearl Walker

Publisher: Wiley, John & Sons, Incorporated

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Chapter 38, Problem 2Q

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The quantities that depend on the intensity of the incident light beam

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Chapter 38, Problem 1Q

Chapter 38, Problem 3Q

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In the photoelectric effect (for a given target and a given frequency of the incident light), which of these quantities, if any, depend on the intensity of the incident light beam: (a) the maximum kinetic energy of the electrons, (b) the maximum photoelectric current, (c) the stopping potential, (d) the cutoff frequency?

In the photoelectric effect, explain why the stopping potential depends on the frequency of the light but not on the intensity.

In the photoelectric effect, does brightness or frequency determine the kinetic energy of the ejected electrons? Which determines the number of the ejected electrons?

Chapter 38 Solutions

Fundamentals of Physics Extended

Ch. 38 - Prob. 1Q Ch. 38 - Prob. 2Q Ch. 38 - Prob. 3Q Ch. 38 - Prob. 4Q Ch. 38 - Prob. 5Q Ch. 38 - Prob. 6Q Ch. 38 - Prob. 7Q Ch. 38 - Prob. 8Q Ch. 38 - Prob. 9Q Ch. 38 - Prob. 10Q

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The quantities that depend on the intensity of the incident light beam

Solution Summary: The author explains how the maximum photoelectric current depends on the intensity of the incident light beam.

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To find: The quantities that depend on the intensity of the incident light beam

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Chapter 38 Solutions

To find:

The quantities that depend on the intensity of the incident light beam