Question on: JAMB Physics - 2020
One of the following readings represents the measurement of the measurement of the length of a metal rod using vernier callipers. Taking the reading accuracy into consideration, the most likely one is
A
5.165cm
B
A. 5.165cm
C
5.0cm
D
5.160cm
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Correct Option: A
The most likely reading from a vernier caliper, considering the level of precision achievable with the instrument, is 5.160 cm. Vernier calipers typically allow measurements to the nearest 0.01 cm (or 0.1 mm). Options with more decimal places (like 5.165 cm) are not possible because the vernier caliper cannot measure that accurately. 5.0 cm is not precise enough. Therefore, 5.160 cm is the most appropriate answer.
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