Drill the log-linearisation and straight-line graph marks that Q2 tests every series — 18 relationships, step-by-step feedback, and worked sketches.
Cambridge A Level Physics 9702 Paper 5 Question 2 (15 marks) requires candidates to linearise a given relationship and analyse a straight-line graph. A relationship — such as y = kxn, T = 2π√(m/k), or an exponential decay — must be rearranged so that plotting the correct quantities against each other yields a straight line. Marks are awarded for identifying what to plot, constructing the data table with correct headings and units, drawing the graph, finding the gradient and intercept, and deriving the unknown constants. Examiner reports show candidates most often lose marks by plotting the wrong quantities, choosing a gradient triangle covering less than half the line, or failing to carry units through to the final constants.
The trainer covers 18 relationships across mechanics, waves, electricity, and thermal physics, spanning linear, power-law, exponential, and inverse forms. Each card presents the raw relationship, prompts you to identify the correct graph form, then reveals the linearised equation, the expressions for gradient and intercept, and a worked sketch. All relationships reflect mark scheme conventions from May/June 2020 to May/June 2025.
Work through the deck once to identify any relationship where you hesitate on the linearised form or confuse gradient with intercept. Pair with the Paper 5 cheat sheet for the full mark-type breakdown across both questions, and the Paper 5 self-assessment checklist to audit your answers after each practice paper.
No spam, no daily nudges. Just a note when Paper 4, Paper 6, or the 9702 trainers are ready — plus the occasional examiner tip the week before an exam window.