JAMB Physics 2014 Objective — Question 2
Question 2 of 50 from the Joint Admissions and Matriculation Board (JAMB) Physics 2014 Objective paper, with the correct answer and a full explanation.
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What is the least possible error encountered when taking measurement with a metre rule?
- A. 1.0mm
- B. 0.5mmCorrect
- C. 0.2mm
- D. 0.1mm
Explanation
The smallest division on a measuring instrument is its accuracy. For a metre rule, this is 0.1cm (1mm). Least possible error = ½×1mm = 0.5mm.
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