O-LevelPhysicsMeasurement5054/12 · May/June 2014 · Q31 Mark

A student measures, as accurately as possible, the length and internal diameter of a straight glass tube. The length is approximately 25 cm and the internal diameter is approximately 2 cm. What is the best combination of instruments for the student to use?

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Aruler, micrometer

Bruler, ruler

Cvernier calipers, micrometer

Dvernier calipers, ruler

✓ Correct answer

D: vernier calipers, ruler

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Topic: Measurement, O-Level Physics (syllabus 5054). Multiple choice, 1 mark.
Source: O-Level Physics, May/June 2014 Paper 1 Variant 2, question 3.

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