The units which are based on one or more fundamental units are called:
Correct answer: B. Derived units
- A. Fundamental units
- B. Derived units
- C. Basic units
- D. None of the above
Explanation
Derived units are formed by combining fundamental units according to the equations of physics or other relationships. For example, the unit of speed is derived by dividing the unit of length by the unit of time (meters per second). Other examples of derived units include the newton (force), pascal (pressure), joule (energy), and watt (power), which are combinations of fundamental units.
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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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