GRE Subject 2026 Practice Test Physics Quantum Mechanics Free Quiz 2

11. What is the spin quantum number?

A. n B. m_s C. l D. m_l

12. What is the intrinsic property of electrons?

A. Spin B. Orbital motion C. Charge D. Mass

13. What particles have half-integer spin?

A. Bosons B. Quarks C. Leptons D. Fermions

14. What does wave-particle duality state?

A. Particle only B. Wave-particle duality C. Wave only D. Neither

15. What does the Compton effect demonstrate?

A. Wave nature B. Both C. Particle nature D. Neither

16. What does the double-slit experiment demonstrate?

A. Particle nature B. Wave nature C. Both D. Wave-particle duality

17. What is the tunneling effect?

A. Classical B. Quantum tunneling C. Relativistic D. Electromagnetic

18. What is quantum entanglement?

A. Entanglement B. Independence C. Anti-correlation D. Uncorrelated

19. What forms can the Schrödinger equation take?

A. Only time-dependent B. Time-dependent or time-independent C. Only time-independent D. Neither

20. What is a conserved quantity in quantum mechanics?

A. Probability current B. Energy current C. Momentum current D. Charge current