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  • 03-10-2017
  • Physics
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The length of a plank is measured by using a meter rule and the value obtained is reported as 2.4 m. Why is this reading inappropriately reported?

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  • 09-10-2017
When one gives the reading of a measurement one needs also to report the error of the measurement. As a general rule, the error of a measurement is given by the smallest division of the meter ruler used. In this case the smaller division is 1 mm. Thus the value of the measurement should have been reported as
[tex]L=2.4(m)+/- 1(mm)[/tex]

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