Answer the following questions related to errors and significant figures:

PHYSICS · Multi-part · CBSE · Physics · Units and Measurements · Units and Measurements

Problem

Answer the following questions related to errors and significant figures: (i) Define absolute error, relative error and percentage error in the measurement of a physical quantity. (ii) Explain how the precision of an instrument is reflected in the number of significant figures that can be written for a measured value. Illustrate your answer by comparing a measurement taken with a vernier calliper having least count 0.1 mm0.1\,\text{mm} and a screw gauge having least count 0.01 mm0.01\,\text{mm}.

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