Lesson 3.2.2.4

3.2.2.4 Wave-particle duality Quiz: AQA Physics, Unit 2

20 questions

Written by Revision Ninja · Last reviewed 11 October 2026

In partnership with Revision Ninja

Lesson 3.2.2.4, Wave-particle duality: 20 multiple choice questions for the AQA Physics (7408), Unit 2: Particles and radiation, written with Revision Ninja.

Host it live on the board and students join with a game code on their own devices, or revise alone with Free Play. The answers are revealed in the game.

Host this setFree Play

The 20 questions

  1. What nature of particles is demonstrated by electron diffraction?

    • Particle nature
    • Electromagnetic nature
    • Transverse nature
    • Wave nature

  2. What nature of electromagnetic waves is demonstrated by the photoelectric effect?

    • Wave nature
    • Particulate nature
    • Transverse nature
    • Continuous nature

  3. What is the de Broglie wavelength formula?

    • λ = h/(mv)
    • λ = h/(mv^2)
    • λ = hmv
    • λ = mv/h

  4. How does an electron's de Broglie wavelength change as its momentum increases?

    • It doubles
    • It stays constant
    • It decreases
    • It increases

  5. Which experiment gives evidence for the wave nature of electrons?

    • Photoelectric effect
    • Compton scattering
    • Electron diffraction
    • Rutherford scattering

  6. What is the de Broglie wavelength of an electron moving at 1.0 × 10^6 m/s? Use m = 9.11 × 10^-31 kg.

    • 7.3 × 10^-7 m
    • 1.5 × 10^-9 m
    • 6.6 × 10^-28 m
    • 7.3 × 10^-10 m

  7. A proton (m = 1.67 × 10^-27 kg) moves at 1.0 × 10^6 m/s. What is its de Broglie wavelength?

    • 4.0 × 10^-13 m
    • 4.0 × 10^-10 m
    • 4.0 × 10^-16 m
    • 7.3 × 10^-10 m

  8. What happens to a particle's de Broglie wavelength if its momentum is doubled?

    • It quadruples
    • It halves
    • It stays unchanged
    • It doubles

  9. An electron is accelerated through 100 V from rest. What is its de Broglie wavelength? Use m = 9.11 × 10^-31 kg and e = 1.6 × 10^-19 C.

    • 1.2 × 10^-10 m
    • 1.2 × 10^-13 m
    • 1.2 × 10^-7 m
    • 3.9 × 10^-10 m

  10. A particle has a de Broglie wavelength of 1.0 × 10^-10 m. What is its momentum?

    • 6.6 × 10^-34 kg m s^-1
    • 6.6 × 10^-14 kg m s^-1
    • 1.5 × 10^-24 kg m s^-1
    • 6.6 × 10^-24 kg m s^-1

  11. What is the momentum of a photon of wavelength 500 nm?

    • 1.3 × 10^-27 kg m s^-1
    • 1.3 × 10^-18 kg m s^-1
    • 2.0 × 10^-27 kg m s^-1
    • 6.6 × 10^-34 kg m s^-1

  12. What happens to the de Broglie wavelength of an electron when its momentum decreases?

    • It decreases
    • It increases
    • It becomes zero
    • It stays constant

  13. An electron and a proton have the same speed. What is the ratio of the electron's wavelength to the proton's wavelength?

    • about 1840
    • 1
    • about 40
    • about 1/1840

  14. An electron is accelerated through 1.0 kV from rest. What is its de Broglie wavelength?

    • 1.2 × 10^-13 m
    • 3.9 × 10^-11 m
    • 1.2 × 10^-10 m
    • 3.9 × 10^-8 m

  15. An electron and a photon have the same wavelength. What is the ratio of the electron's momentum to the photon's momentum?

    • 2
    • 0.5
    • 1
    • 1836

  16. Which phenomenon in the photoelectric effect supports the particulate nature of light?

    • Threshold frequency
    • Wave superposition
    • Beam diffraction
    • Continuous absorption

  17. What is the de Broglie wavelength of a 0.1 kg ball moving at 10 m/s?

    • 6.6 × 10^-32 m
    • 1.0 × 10^-34 m
    • 6.6 × 10^-30 m
    • 6.6 × 10^-34 m

  18. How are new scientific findings evaluated before being accepted by the scientific community?

    • Public voting
    • Peer review
    • Government approval
    • Patent filing

  19. What speed must an electron have for its de Broglie wavelength to be 0.1 nm? Use m = 9.11 × 10^-31 kg.

    • 7.3 × 10^6 m/s
    • 7.3 × 10^9 m/s
    • 7.3 × 10^3 m/s
    • 2.2 × 10^8 m/s

  20. In the de Broglie wavelength formula, what physical quantity does the term mv represent?

    • Force
    • Kinetic energy
    • Momentum
    • Acceleration

All AQA Physics quizzes