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5/30 MCQs for:
THE WORLD OF SCIENCE: Base Physical Quantities, SI Units & Measuring Instruments
A scientist wants to measure very small distances at a micro-scale. Which instrument should they use?
If the time unit is incorrectly taken as minutes instead of seconds, the calculated speed will be:

Which instrument is best for measuring the thickness of a thin metal sheet?

The SI unit of time is:
Which instrument would measure the volume of an irregular solid?