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 4 of 21
- Q4 · 2023 QCAA · Paper 1 · 1 markQuestion and worked solutionKepler’s third law
- Q5 · 2023 QCAA · Paper 1 · 1 markQuestion and worked solutionYoung’s double slit experiment demonstrates that light
- Q6 · 2023 QCAA · Paper 1 · 1 markQuestion and worked solutionAn object of mass travels along a path as shown. The object takes 25 seconds to complete the semicircular section of the path.Calculate the centripetal force experienced by the object as it moves from Y to Z.
- Q7 · 2023 QCAA · Paper 1 · 1 markQuestion and worked solutionAn electron and positron can annihilate into a photon, producing another electron and positron pair in the process. An outcome of this interaction is that
- Q8 · 2023 QCAA · Paper 1 · 1 markQuestion and worked solutionIncident light with a frequency of 1.70 × 1015 Hz is shone onto a metal surface with a work function of 1.00 × 10-18 J. Determine the kinetic energy of a photoelectron ejected from the metal surface.
- Q9 · 2023 QCAA · Paper 1 · 1 markQuestion and worked solutionA magnet is passed through a solenoid comprising five turns and a cross-sectional area of 0.60 m2 to produce an EMF of 0.75 V. Calculate the EMF if the same magnet passes through another solenoid with three times as many turns and half the cross-sectional area at the same rate.
- Q10 · 2023 QCAA · Paper 1 · 1 markQuestion and worked solutionA black body at a temperature of 6040 K produces photons across a range of frequencies. Calculate the frequency at which the maximum number of photons is produced.
- Q11 · 2023 QCAA · Paper 1 · 1 markQuestion and worked solutionCoulomb’s law describes the observation that
- Q12 · 2023 QCAA · Paper 1 · 1 markQuestion and worked solutionWhat is a consequence of symmetry in particle interactions?
- Q13 · 2023 QCAA · Paper 1 · 1 markQuestion and worked solutionA magnet moving through a coil of wire will induce a current with a magnetic field
- Q14 · 2023 QCAA · Paper 1 · 1 markQuestion and worked solutionAn electron is best described as a
- Q15 · 2023 QCAA · Paper 1 · 1 markQuestion and worked solutionTwo objects experience a gravitational force, F, between them. Calculate the magnitude of the force acting between the two objects if the distance between them was doubled and the mass of one object was doubled. 1
- Q16 · 2023 QCAA · Paper 1 · 1 markQuestion and worked solutionA train is travelling at relativistic speed and is about to move through a tunnel. An observer on the train measures the train and tunnel to each be 95 m long. A second observer is stationary relative to the tunnel. They would observe the train to
- Q17 · 2023 QCAA · Paper 1 · 1 markQuestion and worked solutionThe half-life of an unstable subatomic particle is measured by a stationary detector to be longer when its velocity approaches the speed of light. This is because the particle
- Q18 · 2023 QCAA · Paper 1 · 1 markQuestion and worked solutionA 20 kg object is placed on an inclined plane with a slope of 35°. If the object experiences a frictional force of 40 N and no additional applied force, calculate its acceleration down the inclined plane.
- Q19 · 2023 QCAA · Paper 1 · 1 markQuestion and worked solutionCalculate the electric field strength experienced at a distance of 2.8 ×10-11 m from the centre of a helium nucleus.
- Q20 · 2023 QCAA · Paper 1 · 1 markQuestion and worked solutionThe energy level diagram for a simple atom is shown.What transition is allowed for an electron that absorbs a photon with a frequency of ?
- Q21 · 2023 QCAA · Paper 1 · 4 marksQuestion and worked solutionDescribe how the atomic model proposed by Bohr addresses the limitation of Rutherford’s model.
- Q22 · 2023 QCAA · Paper 1 · 3 marksQuestion and worked solutionParticles move at a rate of 1.3 × 106 times per second around a circular particle accelerator with a radius of 35 m. Calculate the average speed of the particles. Show your working.
- Q23 · 2023 QCAA · Paper 1 · 1 markQuestion and worked solutionList the forces that can be experienced by leptons.
- Q24 · 2023 QCAA · Paper 1 · 4 marksQuestion and worked solutionA solenoid consisting of 1240 turns is shown.Determine the magnitude and direction of the magnetic field inside the solenoid. Show your working.
- Q25 · 2023 QCAA · Paper 1 · 3 marksQuestion and worked solutionAn observer who is stationary relative to a moving spaceship measures the velocity of the spaceship to be 2.0 × 108 m s-1. Calculate the length of the spaceship if the observer records it as 18 m. Show your working.
- Q26 · 2023 QCAA · Paper 1 · 4 marksQuestion and worked solutionCalculate the energy (in electron volts) of a photon with a wavelength of 405 nm. Show your working.
- Q27 · 2023 QCAA · Paper 1 · 5 marksQuestion and worked solutionA satellite orbits a planet of mass 6.42 × 1023 kg at a height of 5000 km from the surface. The planet has a diameter of 6780 km. Determine the speed required for the satellite to maintain its orbit. Show your working.