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Questions and Answers
What is the internationally accepted reference standard for measurement called?
What is the internationally accepted reference standard for measurement called?
- International unit (correct)
- Unit of comparison
- Fundamental unit
- Derived unit
What are the units for the fundamental or base quantities called?
What are the units for the fundamental or base quantities called?
- Standard units
- Primary units
- Basic units (correct)
- Initial units
What are the units obtained for the derived quantities called?
What are the units obtained for the derived quantities called?
- Derived units (correct)
- Composite units
- Derived quantities
- Secondary units
What is a complete set of both the base units and derived units known as?
What is a complete set of both the base units and derived units known as?
1.2
1.2
What is the result of a measurement of a physical quantity expressed by?
What is the result of a measurement of a physical quantity expressed by?
What are the units for the fundamental or base quantities called?
What are the units for the fundamental or base quantities called?
What is a complete set of both the base units and derived units known as?
What is a complete set of both the base units and derived units known as?
What does the measurement of any physical quantity involve comparison with?
What does the measurement of any physical quantity involve comparison with?
What were three systems of units in use extensively till recently?
What were three systems of units in use extensively till recently?
What is the internationally accepted reference standard for measurement called?
What is the internationally accepted reference standard for measurement called?
What are the units for the fundamental or base quantities called?
What are the units for the fundamental or base quantities called?
What does a complete set of both the base units and derived units form?
What does a complete set of both the base units and derived units form?
What were three systems of units in use extensively till recently?
What were three systems of units in use extensively till recently?
What are the units obtained for the derived quantities called?
What are the units obtained for the derived quantities called?
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Study Notes
Measurement Standards
- The internationally accepted reference standard for measurement is called the System of International Units (SI).
- The units for the fundamental or base quantities are called base units.
- The units obtained for the derived quantities are called derived units.
- A complete set of both the base units and derived units is known as the SI system.
Measurement of Physical Quantities
- The result of a measurement of a physical quantity is expressed by a numerical value and a unit of measurement.
- The measurement of any physical quantity involves comparison with a standard unit.
Historical Systems of Units
- Three systems of units were in use extensively till recently: CGS (Centi-Gram-Second), FPS (Foot-Pound-Second), and MKS (Meter-Kilogram-Second).
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