Units and Measurement Class 11 CBSE Revision Notes
This article deals with units and measurement class 11 notes. First of all, the measurement of any physical quantity is not possible without comparison with a certain basic standard. Furthermore, this standard is known as the unit which is arbitrarily chosen as well as internationally accepted. Moreover, the expression of the result of a physical quantity’s measure is by a number. Also, a unit accompanies this particular number. Most noteworthy, fundamental units or base units refer to the units for the fundamental or base quantities. The expression of the units of all other physical quantities takes place as combinations of the base units.
Derived units refer to the units whose obtainment takes place for the purpose of derived quantities. Most noteworthy, the system of units refers to a complete set of both the base units and the derived units. The usage of the SI units takes place for all physical measurements. Also, the SI units have clear unit symbols that have international acceptance.
Sub-topics covered under Units and Measurement
- The International System of Units
- Measurement of Length, Mass and Time
- Significant Figures
- Dimensional Analysis and Its Applications
- Accuracy, Precision of Instruments and Errors in Measurement
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