For which measurement is a micrometer screw gauge the most suitable instrument?
the internal diameter of a large plastic beaker known to be about 8×10−2 m8 \times 10^{-2}\text{ m}8×10−2 m
the thickness of a sheet of cardboard known to be about 1.2×10−3 m1.2 \times 10^{-3}\text{ m}1.2×10−3 m
the mass of a small metal washer known to be about 2×10−3 kg2 \times 10^{-3}\text{ kg}2×10−3 kg
the volume of a drop of water known to be about 5×10−8 m35 \times 10^{-8}\text{ m}^35×10−8 m3
164 exam-style questions on CIE IGCSE Physics Physical quantities and measurement techniques, covering Physical quantities and measurement techniques. Each one has a worked solution and a mark scheme showing where the marks go.