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 6 of 21
- Q16 · 2022 QCAA · Paper 1 · 1 markQuestion and worked solutionTwo vectors are shown.Which option represents the resultant vector of ?
- Q17 · 2022 QCAA · Paper 1 · 1 markQuestion and worked solutionAn object is in orbit 400 km above the surface of the Earth. The Earth has a radius of 6.4 × 106 m. What is the magnitude of the gravitational field strength experienced by the object?
- Q18 · 2022 QCAA · Paper 1 · 1 markQuestion and worked solutionThe primary and secondary coils from a lossless transformer are shown.Compared to the primary coil, the secondary coil will experience decreased
- Q19 · 2022 QCAA · Paper 1 · 1 markQuestion and worked solutionA current-carrying wire is placed perpendicular to two magnets. As the current in the wire is changed, the force acting on it is recorded.The gradient of the line of best fit is proportional to the
- Q20 · 2022 QCAA · Paper 1 · 1 markQuestion and worked solutionWhich option lists the gauge bosons in ascending order of the strength of force they mediate?
- Q21 · 2022 QCAA · Paper 1 · 2 marksQuestion and worked solutionA hot iron bar was observed to have a deep red colour. As the iron bar was heated further, the colour changed to orange. Explain the observed colour change in terms of black-body radiation.
- Q22 · 2022 QCAA · Paper 1 · 2 marksQuestion and worked solutionA collection of mesons was observed by a detector to move an average distance of 11.0 m when travelling at 95% of the speed of light. However, based on their properties, the mesons were expected to travel an average distance of 3.4 m. Explain the difference between the observed and expected average distances.
- Q23 · 2022 QCAA · Paper 1 · 6 marksQuestion and worked solutionThe diagram shows the electron energy levels for hydrogen.
- Q24 · 2022 QCAA · Paper 1 · 3 marksQuestion and worked solutionA rectangular loop is placed in a uniform magnetic field of 5 mT.Calculate the change in flux through the loop when it is rotated around the vertical axis. Show your working.
- Q25 · 2022 QCAA · Paper 1 · 2 marksQuestion and worked solutionDescribe how electromagnetic radiation is propagated by the interaction between electric and magnetic fields.
- Q26 · 2022 QCAA · Paper 1 · 1 markQuestion and worked solutionCarbon-14 undergoes nuclear decay to nitrogen-14.14 6 C → 147 N + e − + veList the two types of particles whose total number must be conserved in this reaction.
- Q27 · 2022 QCAA · Paper 1 · 5 marksQuestion and worked solutionObject A is five times the mass of object B. The graph shows the contribution of each object towards the strength of the net gravitational field between them.Determine the total distance between the centre of the two objects. Show your working.
- Q28 · 2022 QCAA · Paper 1 · 7 marksQuestion and worked solutionAn object of mass 200 g moves in a uniform circular path with a radius of 25 cm. The time taken for 10 revolutions is 3.0 s.
- Q1 · 2022 QCAA · Paper 2 · 2 marksQuestion and worked solutionTwo spaceports are stationary relative to each other. Astronaut A moves from one spaceport to the other at relativistic speed and observes the lights on both spaceports turn off at the same time. Astronaut B is at a stationary position equally distant relative to each spaceport and observes the lights turn off one after the other. Explain why the astronauts…
- Q2 · 2022 QCAA · Paper 2 · 2 marksQuestion and worked solutionContrast the properties of up quarks and tau particles.
- Q3 · 2022 QCAA · Paper 2 · 8 marksQuestion and worked solutionNegatively charged oil drops were placed in a uniform electric field generated by two parallel plates. By altering the applied voltage between the plates, the oil drops were suspended in the air between the plates.The graph shows the electric field strength required to suspend negatively charged oil drops of varying weight.
- Q4 · 2022 QCAA · Paper 2 · 5 marksQuestion and worked solutionA stationary object on a frictionless inclined plane is connected to a weight as shown.Calculate the mass of the object on the inclined plane.
- Q5 · 2022 QCAA · Paper 2 · 3 marksQuestion and worked solutionThe Feynman diagram for a particle interaction is shown.Describe the particle interaction taking place.
- Q6 · 2022 QCAA · Paper 2 · 14 marksQuestion and worked solutionA light was shone onto a metallic surface and the subsequently released photoelectron passed through a magnetic field.
- Q7 · 2022 QCAA · Paper 2 · 3 marksQuestion and worked solutionTwo asteroids experience a gravitational force of 3.3 × 103 N between them. Their masses are 2.7 × 1017 kg and 6.1 × 1015 kg. Calculate the distance between the two asteroids. Show your working.
- Q8 · 2022 QCAA · Paper 2 · 4 marksQuestion and worked solutionThe graph shows the gravitational force experienced by a rocket of mass as it approaches an asteroid.Determine the mass of the asteroid. Show your working.
- Q9 · 2022 QCAA · Paper 2 · 9 marksQuestion and worked solutionA person spins an object 4.3 m above the ground in a horizontal circular path of radius 0.8 m. They release the object horizontally, allowing it to travel to the ground.
- Q1 · 2021 QCAA · Paper 1 · 1 markQuestion and worked solutionLeptons do not experience the
- Q2 · 2021 QCAA · Paper 1 · 1 markQuestion and worked solutionCalculate the initial horizontal velocity of a projectile with an initial velocity of 38 m s–1 at an angle of 42° up from the horizontal.