AQA A-Level Physics Paper 3 (3A), June 2025
Every question from AQA A-Level Physics Paper 3 (3A), June 2025 (7408): 4 questions, 45 marks, each with its mark scheme and topic.
- Question 1 8 marks
Analyse an investigation into the relationship between first-harmonic stationary wave frequency and tension, determining control variables, Vrms, period from an oscilloscope display, and evaluating the effect of doubling mass.
Physics · Practical skills · Required Practicals · 3.3 Waves · 3.7 Fields and their consequences (A-level only) · Experimental design · Data analysis · AS practicals (1–6)
- Question 2 12 marks
Analyze repeat timing data to find percentage uncertainty, determine capacitance and resistance from a graph of period against resistance, and design a resistor combination for a specified timing range.
Practical skills · Physics · 3.1 Measurements and their errors · 3.5 Electricity · 3.7 Fields and their consequences (A-level only) · Data analysis · Experimental design · Uncertainty and evaluation
- Question 3 13 marks
Determine the temperature coefficient of resistance from a graph, explain how electrical power and temperature are measured in a filament lamp circuit, and determine the power-law exponent for radiation using a logarithmic plot.
Physics · Practical skills · 3.5 Electricity · Data analysis
- Question 4 12 marks
Analyze the vertical oscillations of a loaded test tube in liquid, including vernier scale measurement of wire thickness, calculating wire length, using a fiducial mark, and determining liquid density.
Physics · Practical skills · 3.1 Measurements and their errors · 3.6 Further mechanics and thermal physics (A-level only) · Data analysis · Experimental design · Uncertainty and evaluation