The volume of a piece of copper is 14.2 cm3. A student measures its mass using an electronic balance, obtaining a reading of 127 g.
The student notices that the electronic balance has a zero error, so it shows mass readings that are all slightly too large.
This means that the calculated density value is:
incorrect and slightly too large
incorrect and slightly too small
correct because the student used three significant figures
correct because the mass of the block is more than zero
44 exam-style questions on Edexcel IGCSE Physics Density and pressure. Each one has a worked solution and a mark scheme showing where the marks go.