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Cambridge AS & A Level Physics

22Quantum physics

Quantum physics in Cambridge AS & A Level Physics: what the syllabus expects you to know, the learning objectives and how to practise.
Topic90 practice questions4 lessons

In this topic

Lessons

  • Photons: energy, momentum and the electronvolt

    40 min

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  • The photoelectric effect

    50 min

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  • Wave-particle duality and electron diffraction

    40 min

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  • Energy levels and line spectra

    45 min

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Sample question

A sample question on this topic. Answer it, check it, then read the worked answer.

Quantum physics: sample question

1 mark

An electron falls from a level of −1.6 eV to a level of −5.5 eV. What is the energy of the emitted photon?

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