Difficulty Verdict

The May/June 2024 Physics 9702 papers presented a moderate-to-high level of challenge. While Paper 12 (Multiple Choice) stayed close to historical trends, Paper 22 and Paper 42 required deep conceptual reasoning and precise mathematical execution. The A Level Structured Paper (42) highlighted complex electromagnetic induction sketches and multi-step nuclear binding energy calculations that tested students under tight time constraints.

Where the Marks Are Won or Lost

In Paper 22, students secured high marks on standard kinematics and Young's modulus calculations but struggled heavily on the moments of a trapdoor question, where the geometry of the force's line of action was often misidentified. In Paper 42, the major mark-differentiators were the derivation of SHM expressions from graphical data and the calculation of the intensity reflection coefficient for ultrasound waves, which required precise unit conversions and algebraic manipulation.

Examiner Pitfalls & Traps

  • Unit Mismatches: Many candidates failed to convert milliseconds (\( \text{ms} \)) to seconds (\( \text{s} \)) when calculating alternating current frequency and rates of change of magnetic flux.
  • Significant Figures: Marks were routinely docked for over-specifying answers (e.g., giving 5 significant figures from 2 s.f. input data) or failing to show adequate intermediate working in "show that" questions.
  • Graph Sketching: In the capacitance and electromagnetic induction questions, sketch lines often lacked critical features such as the correct starting coordinates, sinusoidal shape symmetry, or proper asymptotic behaviour.

Strategy for Success

To maximize scores, students should prioritize mastering the relationships between physical quantities and their graphical representations (such as \( a \) versus \( x \) graphs in oscillations). In practical and planning papers (32 and 52), emphasis must be placed on calculating absolute uncertainties correctly and presenting data to consistent decimal places. Memorizing definitions word-for-word (such as the definition of a *radian* or *binding energy*) guarantees easy marks that many candidates missed.