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If the markings on a ruler used in an investigation are very thick what will be the main limitation?

Answer and explanation

Correct answer: Accuracy in reading small differences will decrease

The governing concept is instrument resolution, meaning the smallest difference that an instrument can distinguish reliably. Thick ruler markings occupy more space and make the exact position of an object’s end difficult to identify, especially when two lengths differ only slightly. The ruler may still measure length and its unit remains unchanged, but the observer cannot report fine differences with good precision. Thus option A is correct. The object itself is not changed by the ruler, units do not disappear, and the roles of dependent and independent variables are determined by the investigation, not by the thickness of scale marks.

Related tags

Instrument-ResolutionRulerPrecisionMeasurement-LimitMeasurement And Scientific UnitsExploration: Entering The World Of Secondary ScienceExploration Entering The World Of Secondary ScienceScience

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