CAIE A-Level Physics 22.2.3 Photon Energy and Work Function

Practise explaining photoelectric emission by comparing photon energy with work function, then interpreting emitted-electron energy and threshold conditions.

Exam points

explain photoelectric emission using photon energy and work-function energy
interpret the roles of photon energy, work function and emitted-electron energy

[Maximum number: 2]

By reference to the photoelectric effect, explain what is meant by work function energy.

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22.2.3—Photoelectric emission in terms of photon energy and work function energy question 1