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IB Physics HL E 2 5 Hl Matter Wave Particle Duality Questions

Explain HL matter-wave and particle duality, relating electron localization, de Broglie waves and the evidence from quantum experiments.

Syllabus
First assessment 2025
Course
Physics HL
Level
HL

Exam points

  • describe how electrons show particle behaviour in emission or detection and wave behaviour in diffraction or interference
  • explain the tension between a localized electron orbit and a delocalized de Broglie wave, using the matter-wave hypothesis
  • classify experimental observations as evidence for particle or wave behaviour and relate them to quantum models of the electron

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Study E.2.5 (HL)—Matter wave-particle duality conceptsOpen the corresponding Concept lesson for explanations, examples and exam connections.

IB Physics HL E 2 5 Hl Matter Wave Particle Duality Questions question 1

[Maximum number: 2]

This question is in two parts. Part 1 is about momentum and energy. Part 2 is about the de Broglie hypothesis and radioactive decay.

Describe the de Broglie hypothesis.

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