CBSE · Class 11 · Physics · Chapter 2

Units and Measurements

Physical quantities, units and measurement errors.

7 lessons 45 min
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Lessons in this chapter

  1. 1Measurement and the SI SystemExpress physical quantities using consistent standards, base units, derived units and meaningful conversions.
  2. 2Precision and Significant FiguresRead the precision carried by measured numbers and choose sensible measurement methods.
  3. 3Calculations with Measured ValuesCarry measured precision through arithmetic and report uncertainty honestly.
  4. 4Dimensions and Dimensional FormulaeDescribe physical quantities in terms of base quantities and derive their dimensional formulae.
  5. 5Checking Equations with DimensionsUse dimensional homogeneity to reject inconsistent expressions and locate missing factors.
  6. 6Finding Relationships by Dimensional AnalysisInfer a possible physical relationship by solving for the powers of relevant variables.
  7. 7Chapter Summary and PracticeConnect measurement, uncertainty, unit conversion and dimensional reasoning through mixed applications.
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