Two spheres have the same outside diameter and are made from the same metal. One sphere is solid and the other is hollow. Which statement is correct?
The hollow sphere has the lower mass and the higher average density
The hollow sphere has the same mass and a lower average density
The hollow sphere has the lower mass and a lower average density
The hollow sphere has the same average density because the metal is the same
40 exam-style questions on AQA GCSE Physics 3.1 Changes of state and the particle model, covering 3.1.1 Density of materials and 3.1.2 Changes of state. Each one has a worked solution and a mark scheme showing where the marks go.