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The kinetic energy of the ejected photoelectron is dependent upon the energy of which of the following?

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The kinetic energy of the ejected photoelectron is dependent upon the energy of which of the following?

(a) Ions around

(b) Photons around

(c) Material

(d) Impinging photon

The question was posed to me in a national level competition.

This question is from Electron Spectroscopy for Chemical Analysis topic in division Electron and Ion Spectrometers of Analytical Instrumentation

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Right choice is (d) Impinging photon

Explanation: The kinetic energy of the ejected photoelectron is dependent upon the energy of an impinging photon. A free electron is ejected.

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