100+ Free QCAA Physics Practice Questions
Prepare for the QCAA Senior Secondary Physics (Queensland Units 3 & 4) exam with instant access — no signup required.
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Key Facts: QCAA Physics Exam
50% of subject mark
QCAA External Exam Weighting
QCAA Physics Senior Syllabus 2025/2026
4 Core Syllabus Topics
Units 3 & 4 Main Units
QCAA Curriculum Framework
c = 3.00 × 10⁸ m/s
Speed of Light in Vacuum
QCAA Formula & Data Booklet
h = 6.63 × 10⁻³⁴ J·s
Planck's Constant
QCAA Formula & Data Booklet
1 eV = 1.60 × 10⁻¹⁹ J
Electron-Volt Conversion
QCAA Data Sheet
The Queensland Curriculum and Assessment Authority (QCAA) Year 12 Physics curriculum requires students to master both classical field theories and 20th-century modern physics across Units 3 and 4. External assessment contributes 50% to the overall QCE grade. This 100-question practice exam features rigorous numerical calculations and conceptual items designed around official QCAA syllabus objectives, formulas, and fundamental physical constants.
Sample QCAA Physics Practice Questions
Try these sample questions to test your QCAA Physics exam readiness. Each question includes a detailed explanation. Start the interactive quiz above for the full 100+ question experience with AI tutoring.
1An object moves in a horizontal circle of radius 4.0 m at a constant speed of 8.0 m/s. What is the magnitude of its centripetal acceleration?
2A ball is launched from ground level at an initial velocity of 20 m/s at an angle of 30° above the horizontal. Assuming g = 9.8 m/s² and ignoring air resistance, what is the initial vertical component of its velocity?
3According to Newton's law of universal gravitation, if the distance between two point masses is doubled, how does the gravitational attraction force between them change?
4Kepler's third law of planetary motion states that the square of a planet's orbital period T is proportional to which quantity?
5What is the direction of the gravitational field strength vector at any point in space surrounding a spherical mass like the Earth?
6Which of the following best describes a geostationary satellite orbit around Earth?
7What is the net force acting on an object moving at a constant speed in a uniform circular path?
8A 1.0 kg mass attached to a string is swung in a horizontal circle of radius 0.50 m at a constant linear speed of 4.0 m/s. What is the tension in the string?
9A projectile is launched from ground level with an initial velocity of 50 m/s at an angle of 53.1° above the horizontal (cos 53.1° = 0.60, sin 53.1° = 0.80). Taking g = 9.8 m/s², what is the total time of flight until it hits the ground?
10A satellite of mass m orbits Earth (mass M_E = 5.97 × 10²⁴ kg) in a stable circular orbit at a radius of r = 7.00 × 10⁶ m from the center of Earth. Using G = 6.67 × 10⁻¹¹ N·m²/kg², what is the orbital speed of the satellite?
About the QCAA Physics Exam
The QCAA Senior Physics examination assesses student mastery of Year 12 Physics concepts defined in Units 3 and 4 of the Queensland syllabus. Unit 3 focuses on Gravity and Electromagnetism, encompassing circular motion, planetary orbits, electrostatic forces, magnetic fields, and electromagnetic induction. Unit 4 explores Revolutions in Modern Physics, covering Einstein's theory of Special Relativity, quantum phenomena including the photoelectric effect and de Broglie wavelength, and the subatomic architecture of the Standard Model.
Assessment
Performance-based assessment
Time Limit
Two papers, 90 minutes working time each
Passing Score
Criterion-based assessment (Grades A to E); 50% contributed by QCAA external examination
Exam Fee
Free as part of Queensland secondary curriculum (Queensland Curriculum and Assessment Authority (QCAA))
QCAA Physics Exam Content Outline
Gravity and Motion
Vector analysis of projectile motion, centripetal acceleration and force, universal gravitation ($F_g = G \frac{m_1 m_2}{r^2}$), Kepler's laws ($T^2 \propto r^3$), orbital speed, and gravitational field strength.
Electromagnetism
Coulomb's law ($F = \frac{1}{4\pi\varepsilon_0} \frac{q_1 q_2}{r^2}$), electric field strength, magnetic force on moving charges ($F = qvB\sin\theta$) and currents ($F = BIL\sin\theta$), magnetic flux ($\Phi = BA\cos\theta$), Faraday's law of induction, Lenz's law, and step-up/step-down transformers.
Special Relativity
Einstein's two postulates, frames of reference, relativistic time dilation ($t = \gamma t_0$), length contraction ($L = L_0/\gamma$), relativistic momentum ($p = \gamma mv$), mass-energy equivalence ($E = mc^2$), and evidence from atmospheric muon decay.
Quantum Theory
Blackbody radiation spectrum, Wien's displacement law, Planck's energy equation ($E = hf$), photoelectric effect work function ($E_{k,max} = hf - W$), stopping voltage, photon momentum ($p = h/\lambda$), Bohr atom energy levels, and de Broglie wavelength.
The Standard Model
Classification of fundamental particles (quarks: u, d, c, s, t, b; leptons: e, μ, τ and neutrinos), hadrons (baryons and mesons), exchange bosons for fundamental interactions, conservation of charge, baryon number, and lepton number, and Feynman diagram conventions.
How to Pass the QCAA Physics Exam
What You Need to Know
- Passing score: Criterion-based assessment (Grades A to E); 50% contributed by QCAA external examination
- Assessment: Performance-based assessment
- Time limit: Two papers, 90 minutes working time each
- Exam fee: Free as part of Queensland secondary curriculum
Keys to Passing
- Work through all 100 available questions
- Review every answer and explanation
- Track weak areas and revisit them
- Use our AI tutor for tough concepts
QCAA Physics Study Tips from Top Performers
Frequently Asked Questions
What topics are tested in QCAA Senior Physics Units 3 & 4?
Unit 3 covers Gravity and Motion (projectiles, circular motion, universal gravitation, Kepler's laws) and Electromagnetism (electrostatics, magnetic fields, magnetic forces, Faraday's & Lenz's laws, transformers). Unit 4 covers Special Relativity (time dilation, length contraction, E=mc²), Quantum Theory (photoelectric effect, photon energy, atomic spectra, de Broglie wavelength), and The Standard Model (quarks, leptons, gauge bosons, conservation laws, Feynman diagrams).
How much does the external examination contribute to the final QCAA grade?
For QCAA Senior Physics, the external examination contributes 50% toward the overall subject grade. The remaining 50% is determined by internal assessments (Data Test 10%, Student Experiment 20%, and Research Investigation 20%).
Are mathematical calculations required in the QCAA Physics exam?
Yes. Quantitative calculations represent a substantial portion of the exam. Students must be comfortable using scientific calculators, rearranging algebraic formulas from the official QCAA Formula and Data Book, and using exact physical constants (e.g., speed of light c = 3.00 × 10⁸ m/s, Planck's constant h = 6.63 × 10⁻³⁴ J·s, gravitational constant G = 6.67 × 10⁻¹¹ N·m²/kg²).
What is the difference between proper time and relativistic time in Special Relativity?
Proper time (t₀) is the time interval measured in a frame of reference where the observer is at rest relative to the events being timed. Relativistic time (t) is measured by an observer in relative motion. Because the Lorentz factor γ ≥ 1, relativistic time is always greater than or equal to proper time (time dilation: t = γ t₀).
How do conservation laws work in Standard Model particle reactions?
In all particle interactions, electric charge (Q), baryon number (B), and lepton numbers (L_e, L_μ, L_τ) must be conserved before and after the reaction. Quarks carry a baryon number of +1/3 (antiquarks -1/3), while leptons carry a lepton number of +1 (antileptons -1).