Cambridge Physics 0625 Paper 6 Revision Guide for May/June 2026

Cambridge’s Physics 0625 Paper 6 is a 1‑hour, 40‑mark alternative‑to‑practical paper testing planning, data handling and evaluation skills. Examiners report that many candidates fail to identify variables or suggest sensible improvements. This guide helps you demonstrate experimental insight and earn top marks.

The paper requires you to describe how to carry out experiments on topics from across the syllabus. Common mistakes include failing to define independent, dependent and control variables, presenting tables without headings or units, and giving vague comments on reliability. Examiners also look for specific improvements linked to sources of error and expect calculations to use significant figures appropriate to the instrument resolution

To prepare effectively:

• Plan with variables in mind: When outlining experiments, clearly state what you will change (independent variable), what you will measure (dependent variable) and what you will keep constant (control variables). Explain how you will measure each.

• Present data professionally: Construct tables with labelled columns and units. Draw graphs with appropriate scales and straight‑line best fits, then use gradients and intercepts to derive relationships.

• Evaluate and improve: Identify systematic and random errors; suggest specific improvements such as repeating readings, using electronic sensors or shielding apparatus. Match your suggested improvements to the identified errors.
  

  In the final revision phase, practise past Paper 6 questions and review examiner reports. Use our Paper 6 Experimental Design Checklist to ensure you have covered variables, measurements and evaluation. By approaching the paper like a scientist, you will impress examiners and secure marks.