Which of the following is the most accurate and precise instrument to measure the diameter of a thin copper wire with a nominal diameter of about 0.5 mm?
A micrometer screw gauge
A vernier caliper
A metre rule
An electronic top pan balance
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.