In International system of units, called SI units, the unit of mass is:
Correct answer: C. Kilogram
- A. Pound
- B. Gram
- C. Kilogram
- D. Quintal
Explanation
The kilogram (kg) is the SI unit of mass. It is defined as the mass of the international prototype of the kilogram, which is a platinum-iridium alloy cylinder kept at the International Bureau of Weights and Measures (BIPM) in France. The kilogram is the fundamental unit of mass in the SI system.
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About Measurements
Physical quantities are expressed with SI base and derived units, while measurement limits are described through accuracy, precision, absolute and percentage error, and significant figures. Dimensional analysis checks equations, derives relationships and detects inconsistent units, but it cannot determine numerical constants or distinguish quantities with identical dimensions.
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