If ten students are asked to measure the length of a piece of cloth upto a mm, using a metre scale,

Question

If ten students are asked to measure the length of a piece of cloth upto a mm, using a metre scale,

If ten students are asked to measure the length of a piece of cloth upto a mm, using a metre scale, do you think their answers will be identical? Give reasons.

Monjur Alahi

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2025-01-04 04:42

1 Answers

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Salim Ahmed Kawsar · Accepted Answer · 2023-02-05T15:29:48+06:00

Answers of the students are likely to be different. Length of cloth needs to be measured up to a millimetre (mm) length.

Hence, to obtain accurate and precise reading one must use measuring instrument having least count smaller than 1 mm.

But least count of metre scale is 1 mm. As a result, even smallest uncertainty in reading would vary reading significantly. Also, skill of students doing measurement may also introduce uncertainty in observation. Hence, their answers are likely to be different.