Edexcel A-Level Physics AS 2.3.62 Photoelectric Effect Evidence Questions

Practise Edexcel IAL Physics 2.3.62 by using instant emission and one-photon transfer, comparing intensity/frequency observations with wave/particle models and identifying photon evidence.

Exam points

use immediate photoelectron emission to argue for one-photon one-electron energy transfer
compare intensity and frequency observations against wave and particle models of light
identify the photoelectric effect as evidence for the photon model of electromagnetic radiation

[Maximum number: 3]

The diagram shows the energy levels for an atom of hydrogen.

Figure for Question Edexcel A-Level Physics AS 2.3.62 Photoelectric Effect Evidence Questions question 1 — Edexcel A-Level Physics AS

Photons with energy $1.63\times10^{-18}\,\mathrm{J}$ are incident on a metal plate. The surface releases electrons due to the photoelectric effect.

Explain why the photoelectric effect demonstrates light behaving as a particle, rather than a wave.

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Edexcel A-Level Physics AS 2.3.62 Photoelectric Effect Evidence Questions question 1