Paper 2 · November 2017 · Measurement and Units
On a micrometer screw gauge, the sleeve (barrel) scale reads 8.5 mm and the thimble scale adds a further 0.35 mm. What is the total reading shown?
Model answer
8.85 mm
Also accepted: 8.85mm, 8.85
Explanation
Total reading = 8.5 mm + 0.35 mm = 8.85 mm.
Derived from ZIMSEC Physics 5055/2 Paper 2 Theory, November 2017, Q1