JAMB - Physics (2024 - No. 53)
What is the least possible error encountered when taking measurement with a metre rule?
1.1mm
0.5mm
0.2mm
0.1mm
ব্যাখ্যা
A standard meter rule has markings that are usually every millimeter (1 mm). The least count, which is the smallest measurement that can be accurately read, is often 1 mm.
The least possible error is generally considered to be half of the smallest division, so it is ±0.05cm (or ±0.5mm).
The least possible error is generally considered to be half of the smallest division, so it is ±0.05cm (or ±0.5mm).