A student is investigating the safety boundaries around a weak beta-emitting source, Strontium-90, used in a school laboratory.
Describe a laboratory experiment the student could perform to determine the maximum range of these beta (β−\beta^-β−) particles in air.
81 exam-style questions on Edexcel GCSE Physics 6.1 Atomic structure and isotopes. Each one has a worked solution and a mark scheme showing where the marks go.