CAIE A-Level Physics 22.3.1 Evidence for Wave–Particle Duality

Practise using photoelectric, interference and diffraction observations to identify evidence for particle behaviour, wave behaviour and wave-particle duality.

Exam points

use the photoelectric effect, interference and diffraction as evidence for wave–particle duality
distinguish which observation supports particulate or wave behaviour

[Maximum number: 1]

State an effect, one in each case, that provides evidence for

the particulate nature of electromagnetic radiation.

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22.3.1—The photoelectric effect provides evidence for a particulate nature of question 1