Physics questions and solutions
Browse original practice and official past-paper questions. Each question has its own link, with its source and worked solution.
498 questions · Page 3 of 21
- Q15 · 2024 QCAA · Paper 1 · 1 markQuestion and worked solutionIn which direction does the centripetal force act?
- Q16 · 2024 QCAA · Paper 1 · 1 markQuestion and worked solutionThe table shows a combination of mediating particles and possible forces they experience. Which row is correct?
- Q17 · 2024 QCAA · Paper 1 · 1 markQuestion and worked solutionA person on Earth experiences a time period of 15 years. Approximately how much time will have passed for a passenger on a spaceship travelling at 0.7 c relative to Earth during that time?
- Q18 · 2024 QCAA · Paper 1 · 1 markQuestion and worked solutionElectromagnetic waves are produced by an oscillating electric charge resulting in an interaction between magnetic and electric fields. How are these two fields aligned?
- Q19 · 2024 QCAA · Paper 1 · 1 markQuestion and worked solutionA 7 µC charge requires 1.5 × 10−8 J of energy to be moved between two points in an electric field. What is the order of magnitude of the potential difference between the two points?
- Q20 · 2024 QCAA · Paper 1 · 1 markQuestion and worked solutionIdentify the defining feature of a black body.
- Q21 · 2024 QCAA · Paper 1 · 3 marksQuestion and worked solutionDescribe the particle interaction shown.
- Q22 · 2024 QCAA · Paper 1 · 5 marksQuestion and worked solutionSpecial relativity accounts for the observation that more muons from cosmic rays are detected near Earth’s surface than expected. Explain this phenomenon by outlining why Newtonian physics cannot explain this scenario while special relativity can. Refer to the frames of reference of both the travelling muons and the observer near the Earth’s surface.
- Q23 · 2024 QCAA · Paper 1 · 4 marksQuestion and worked solutionAn experiment was conducted to study an object undergoing circular motion, with the radius of motion acting as the independent variable and the speed kept constant. The data comparing the period and radius of motion is shown.
- Q24 · 2024 QCAA · Paper 1 · 7 marksQuestion and worked solutionThe atomic energy level diagram for an unknown multi-electron ion is shown.
- Q25 · 2024 QCAA · Paper 1 · 4 marksQuestion and worked solutionA transformer with a turns ratio of 48:1 is set up to reduce a 240 V input.
- Q26 · 2024 QCAA · Paper 1 · 3 marksQuestion and worked solutionThe centres of two small equally positively charged metallic spheres are separated by a distance of 0.30 m and experience a force of 0.025 N between them. Calculate the charge on each of the metallic spheres. Show your working.
- Q27 · 2024 QCAA · Paper 1 · 4 marksQuestion and worked solutionOn another planet, an object was projected upwards from an initial height and took to land.The relationship between vertical displacement and time is . Determine the horizontal displacement of the object when it lands.
- Q1 · 2024 QCAA · Paper 2 · 4 marksQuestion and worked solutionA coil of wire with 100 turns and a radius of 1.4 cm is placed perpendicular to a magnetic field of strength 0.510 T. The magnetic field strength is then changed to 0.030 T in 0.020 s. Calculate the magnitude of electromotive force (emf) induced in the coil. Show your working.Magnitude of emf = V
- Q2 · 2024 QCAA · Paper 2 · 6 marksQuestion and worked solutionIn a distant solar system, a star, planet and spaceship are aligned as shown.
- Q3 · 2024 QCAA · Paper 2 · 8 marksQuestion and worked solutionA student conducted an experiment to address the following research question: What is the relationship between the angle of inclination and the acceleration from rest down a slope of a object?Data from the experiment was processed to produce the graph shown.
- Q4 · 2024 QCAA · Paper 2 · 4 marksQuestion and worked solutionExplain how a satellite can be accelerating yet maintain a constant speed in a circular orbit around a planet.
- Q5 · 2024 QCAA · Paper 2 · 3 marksQuestion and worked solutionExplain the significance of the threshold frequency when incident light with a range of frequencies shines on a metal.
- Q6 · 2024 QCAA · Paper 2 · 11 marksQuestion and worked solutionA photoelectric experiment was set up with a variable voltage between the collector and emitter, a resistor and an ammeter. There was no current detected when the light was off.The potential difference required to reduce the current to was measured for different wavelengths of light.
- Q7 · 2024 QCAA · Paper 2 · 4 marksQuestion and worked solutionView question and marking material
- Q8 · 2024 QCAA · Paper 2 · 7 marksQuestion and worked solutionA U-shaped magnet was placed on a digital scale. A current-carrying wire was connected to a variable power supply and passed through the space between the poles of the magnet. The length of wire within the magnetic field was , and the wire did not touch the magnet.
- Q1 · 2023 QCAA · Paper 1 · 1 markQuestion and worked solutionAn object is unable to accelerate to the speed of light because
- Q2 · 2023 QCAA · Paper 1 · 1 markQuestion and worked solutionPhotons are
- Q3 · 2023 QCAA · Paper 1 · 1 markQuestion and worked solutionA current-carrying wire is shown.Determine the magnetic field strength at X.