Measurements are estimates
Measurements are estimates
No physical measurement is perfectly exact. Instruments have limited resolution, people judge scale positions, and conditions vary slightly from trial to trial.
Step-by-step lessons on AQA A Level Physics Limitation of physical measurements. Each one builds up to exam-style questions. Physics is one of the most mathematically demanding A Levels -- at least 40% of the marks require maths skills at Level 2 (GCSE) standard or above, so build calculation and graph-handling fluency alongside the conceptual content from the start.