In the SI system of units, the fundamental units of length, mass, and time are _, _ and _ respectively:
Correct answer: C. Meter, Kilogram, and Second
- A. Meter, Kilogram and Kilo second
- B. Kilometre, Kilogram and Hour
- C. Meter, Kilogram, and Second
- D. Centimetre, Centigram and Second
Explanation
The following is the solution:Meter (m) remains the same as in options (a) and (b).Kilogram (kg) remains the same as in options (a) and (b).Second (s) is the base unit of time in the SI system, representing the duration of 9,192,631,770 periods of the radiation corresponding to the transition between two hyperfine levels of the ground state of the cesium-133 atom.
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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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