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What problem can occur if the zero of a measuring instrument is incorrect?

Answer and explanation

Correct answer: Zero error

If the zero mark of an instrument is not in the correct position, the instrument shows a non-zero reading even when no quantity is being measured. This can add a fixed positive or negative amount to every reading, and is called zero error. Random error causes irregular variation in readings, whereas this error arises from the instrument’s zero setting. Exam tip: always check the zero reading before taking measurements.

Related tags

Zero ErrorMeasurementInstrumentsMeasurement ErrorsScientific MethodClass 9 ScienceNature And Meaning Of ScienceExploration: Entering The World Of Secondary Science

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