OCR A Level Physics A
OCR A Level Physics A Quantum Physics Exam Questions
Free OCR A Level Physics A exam questions on Quantum Physics, with mark schemes. Covers photons, the photoelectric effect, wave-particle duality and electron diffraction.
Quantum Physics exam questions
1 question pack of real past exam questions with its mark scheme. Answer every question without notes, then mark your answers line by line against the mark scheme.
StemUp mark scheme flashcards
OCR A Level Physics A H556 Flashcards (Anki & Quizlet)
Every answer is written in mark scheme wording, so you learn exactly what examiners give marks for. Use them on Anki or Quizlet, then test yourself with the questions on this page.
From £10.99View flashcards
About OCR A Level Physics A Quantum Physics
This topic covers quantum behaviour.
What you need to know
- Photons E = hf = hc/λ.
- Photoelectric effect Work function and threshold frequency.
- Einstein's equation hf = φ + KEmax.
- Duality Electron diffraction and de Broglie wavelength.
Common mistakes in Quantum Physics
- Saying intensity affects electron energy.
- Forgetting eV conversion.
- Mixing threshold frequency and work function.
Try three Quantum Physics exam-style questions
1. State the de Broglie equation. (1 mark)
Show the mark scheme answer
λ = h/p.
2. Explain why intensity increases current but not KE. (2 marks)
Show the mark scheme answer
More photons per second release more electrons (1), but each photon energy is unchanged (1).
3. Convert 5.0 eV to J. (1 mark)
Show the mark scheme answer
8.0 x 10⁻¹⁹ J.
Quantum Physics FAQs
What does Quantum Physics cover?
Photons, the photoelectric effect and duality.
Which practical links here?
Determining the Planck constant using LEDs.
What shows electrons are waves?
Electron diffraction.
Revise this topic with flashcards: OCR A Level Physics A H556 Flashcards, with mark scheme answers for Anki and Quizlet.
