WAEC Physics 2022 Objective — Question 48
Question 48 of 50 from the West African Examinations Council (WAEC) Physics 2022 Objective paper, with the correct answer and a full explanation.
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Using vernier calipers, which of the following readings gives the correct measurement for the length of a rod?
- A. 4.1 cm
- B. 4.13 cmCorrect
- C. 4.125 cm
- D. 4.1254 cm
Explanation
A standard vernier caliper measures to two decimal places (0.01cm precision), so 4.13cm is the correctly precise reading.
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