AQA AS Level Physics Paper 1, June 2025
Every question from AQA AS Level Physics Paper 1, June 2025 (7407): 7 questions, 70 marks, each with its mark scheme and topic.
- Question 1 9 marks
Calculate the specific charge of a tritium nucleus, explain its value relative to other hydrogen isotopes, deduce the quark structure of a neutral kaon from a reaction, and identify the decay products of a positive pion.
Physics · 3.2 Particles and radiation
- Question 2 8 marks
Calculate the refractive index of optical fibre cladding, the maximum angle of incidence for total internal reflection, and the transit time of light through the fibre.
Physics · 3.3 Waves
- Question 3 12 marks
Calculate the de Broglie wavelength of an electron after inelastic collision with a mercury atom, determine the photon wavelength and emission rate, and explain the emission of white light by a fluorescent tube coating.
Physics · 3.2 Particles and radiation
- Question 4 9 marks
State the principle of moments, calculate an unknown reaction force on a loaded trolley in equilibrium, and analyze how the forces change when tilted on a step.
Physics · 3.4 Mechanics and materials
- Question 5 15 marks
Calculate the cable extension using the Young modulus and resolving forces, determine gravitational potential energy and cable tension from a velocity–time graph, find the impact velocity of a detached object, and sketch its kinetic energy–time graph.
Physics · Practical skills · 3.4 Mechanics and materials · Data analysis
- Question 6 9 marks
Describe an experiment to produce the current-voltage characteristic of a thermistor, explain its behaviour with temperature, and determine the resistance of a fixed resistor in series.
Physics · Practical skills · 3.5 Electricity · Experimental design · Data analysis
- Question 7 8 marks
Define threshold frequency, calculate stopping potential and work function for magnesium, and sketch and explain graphs of maximum kinetic energy against frequency for metals with different work functions.
Physics · 3.1 Measurements and their errors · 3.2 Particles and radiation