O-LevelPhysicsMeasurement5054/11 · May/June 2011 · Q11 Mark

A plumber measures, as accurately as possible, the length and internal diameter of a straight copper pipe. The length is approximately 80 cm and the internal diameter is approximately 2 cm. What is the best combination of instruments for the plumber to use?

Ainternal diameter: rule, length: rule

Binternal diameter: rule, length: tape

Cinternal diameter: vernier calipers, length: rule

Dinternal diameter: vernier calipers, length: tape

✓ Correct answer

C: internal diameter: vernier calipers, length: rule

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Topic: Measurement, O-Level Physics (syllabus 5054). Multiple choice, 1 mark.
Source: O-Level Physics, May/June 2011 Paper 1 Variant 1, question 1.

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