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Fundamentals of Quantum Mechanics

Quantum Physics

A series of factual questions covering core principles, particles, and historical experiments in quantum physics.

physics science quantum

12 Questions Medium Ages 5+ Oct 11, 2026

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About this Study Set

This study set covers Quantum Physics through 12 practice questions. A series of factual questions covering core principles, particles, and historical experiments in quantum physics. Every question includes the correct answer so you can learn as you go — pick any format above to get started.

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1 Which experiment demonstrated the wave-particle duality of light by showing an interference pattern when electrons are fired at a screen with two slits?

A The Michelson-Morley experiment
B The Double-slit experiment
C The Stern-Gerlach experiment
D The Millikan oil-drop experiment

2 According to the Heisenberg Uncertainty Principle, which pair of physical properties cannot be simultaneously measured with absolute precision?

A Mass and velocity
B Temperature and pressure
C Position and momentum
D Charge and spin

3 What is the term for the smallest discrete amount of any physical entity involved in an interaction?

A Quark
B Quantum
C Lepton
D Boson

4 In quantum mechanics, what does the wave function (represented by the Greek letter psi, Ψ) describe?

A The trajectory of a particle
B The probability amplitude of a particle's state
C The exact heat capacity of a system
D The mass-energy equivalence of a particle

5 Which fundamental force is carried by the particle known as the gluon?

A Electromagnetism
B Gravity
C Weak nuclear force
D Strong nuclear force

6 What is the name of the phenomenon where two or more particles become linked such that the state of one instantly influences the state of the other, regardless of distance?

A Quantum entanglement
B Superposition
C Quantum tunneling
D Wave-function collapse

7 Which of these particles is classified as a fermion?

A Photon
B Gluon
C Electron
D Higgs boson

8 What is the theoretical particle that mediates the electromagnetic force?

A Neutrino
B Photon
C Graviton
D Muon

9 According to the Pauli Exclusion Principle, no two electrons in an atom can have the same set of what?

A Quantum numbers
B Orbital velocities
C Mass values
D Spin directions

10 What occurs when a particle passes through a potential energy barrier that it classically should not be able to cross?

A Quantum decoherence
B Quantum tunneling
C Pair production
D Photoelectric effect

11 Which physicist proposed that particles such as electrons exhibit wave-like properties, with a wavelength inversely proportional to their momentum?

A Max Planck
B Louis de Broglie
C Niels Bohr
D Richard Feynman

12 What is the value of the spin quantum number for all fermions, such as electrons and protons?

A Integer (0, 1, 2)
B Half-integer (1/2, 3/2)
C Always zero
D Irrational numbers

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