# CBSE class 11 Physics Notes of Chapter 2

## CBSE Class 11 Physics Notes Chapter 2 Units and Measurements

Download PDF of CBSE class 11 Physics notes Chapter 2 Units and Measurements. Notes  CBSE class 11 Physics notes Chapter 2 Units and Measurements contains all the topic as per the syllabus of NCERT. Each topic is explained  in very easy language with colored diagrams. Typical topics are divided into parts so that student can understand  these topics step by step. CBSE class 11 Physics notes Chapter 2 is prepared by our experts as per the latest syllabus and exam pattern Class 11 Physics. Derivation of formulas is given in very simple ways after consulting from various books  and expert teachers. Also don’t forget to download CBSE Class 11 Notes of other Subjects like Chemistry, Mathematics Formulas sheets, Biology. Along with Notes, we are also providing Online Quizzes for each Chapters of class 11 Physics and other subjects. Online Quizzes are given topic wise and contains MCQs with timer to attempt the quizzes. After reading the CBSE Class 11 Physics Notes of Chapter 2 Units and Measurements, students can revise the whole Chapter in Our Online quizzes.

## Syllabus Covered

### CBSE Class 11 Physics Notes Chapter 2 Units and Measurements

Need for measurement: Units of measurement; systems of units; SI units, fundamental  and   derived  units.  Length, mass  and   time  measurements; accuracy and  precision  of  measuring  instruments;  errors in  measurement; significant figures. Dimensions of physical quantities, dimensional analysis and its applications.

#### Topics included in the Notes of CBSE class 11 Physics Notes Chapter 2

Physical Quantity, Representation of Physical Quantity, Characteristics of a Unit, Fundamental Quantities, Derived Quantities, Systems of Units, SI System of Units, Fundamentals Units, Supplementary Units, Measurement of Length, Astronomical Unit (Au), Light Year, Parsec, Indirect Method To Mesurement of Large Or Small Distances, Parallax Method, Measurment of Molecule Size: Size of Oleic Acid Molecule, Coherent System of Units, Advantages of Si System, Order of Magnitude, Dimensions and Dimensional Formulae, Dimensional Formula of Some Physical Quantities, Four Types of Quantities, Dimensional Equations, Applications of Dimensional Equations, Conversion of One System of Unit Into Another System, Checking The Accuracy of Various Formulae, Derivation of Formulae, Limitations of Dimensional Analysis, Significant Figures, Rules For Finding Significant Figures, Significant Figures In Algebric Operations, Addition Or Subtraction, Multiplication Or Division, Rules of Rounding off Significant Figures, Error, Absolute Error, Mean Absolute Error, Relative Error, Percentage Error, Propagation of Error, Error In Addition Or Subtraction, Error In Multiplication Or Division, Error In Measured Quantity Raised To Power

### Units and Measurements  