A Metre Scale is Graduated at Every Millimetre. How Many Significant Digits Will Be There in a Length Measurement with this Scale? - Physics

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Sum

A metre scale is graduated at every millimetre. How many significant digits will be there in a length measurement with this scale?

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Solution

The metre scale is graduated at every millimetre.
i.e., 1 m = 1000 mm
The minimum number of significant digits may be one (e.g., for measurements like 4 mm and 6 mm) and the maximum number of significant digits may be 4 (e.g., for measurements like 1000 mm). Hence, the number of significant digits may be 1, 2, 3 or 4.

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Chapter 2: Physics and Mathematics - Exercise [Page 30]

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HC Verma Class 11, Class 12 Concepts of Physics Vol. 1
Chapter 2 Physics and Mathematics
Exercise | Q 31 | Page 30

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