A student repeats an experiment to measure the distance from a convex lens to a screen where a sharp image is formed.
The distance between the object and the lens is kept constant. The four measurements obtained for the image distance are:
15.2 cm,14.8 cm,15.6 cm,14.4 cm 15.2\text{ cm}, \quad 14.8\text{ cm}, \quad 15.6\text{ cm}, \quad 14.4\text{ cm} 15.2 cm,14.8 cm,15.6 cm,14.4 cmCalculate the uncertainty in these measurements.
29 exam-style questions on AQA GCSE Physics 6.2 Electromagnetic waves, covering 6.2.1 Types of electromagnetic waves, 6.2.2 Properties of electromagnetic waves 1, 6.2.3 Properties of electromagnetic waves 2, 6.2.4 Uses and applications of electromagnetic waves, 6.2.5 Lenses, and 6.2.6 Visible light. Each one has a worked solution and a mark scheme showing where the marks go.