Question of Class 11 - Measurement And Units : Any meaningful term which can be measured is a physical quantity. For example length, velocity, time etc. are physical quantity. But handsomeness, beauty are not physical quantity. The Units and Measurements is one of the important chapters of the Class 11th Physics. Students can easily cover the chapter with the help of the Units and Measurements Class 11 notes. In the notes, all the concepts and topics are explained in a creative and precise manner. The Units and Measurements Class 11 notes are considered to be important study material throughout the preparation. As it helps students to understand the chapter Units and Measurements in many different ways. One of the ... Learn about the fundamental and derived units of physical quantities, the systems of units , the dimensions and the homogeneity principle of physical laws. Find the definitions, formulas and examples of various units and measurements in physics.