NCERT Grade 11 Physics Chapter 2, Units and Measurement, will strengthen your basic concepts about what is a unit, base units, derived units, system of units and others. It will help you to understand the what is the need of an international system of units and how are they decided. In this chapter, complexities of units and measurement shall be dealt with in a comprehensive manner. Units are used to measure different dimensions such as length, breadth, mass, etc. In Chapter 2, Physics of NCERT Grade 11 you shall learn about parallax method, parallax angle and other methods to measure length. One shall also learn on alternative methods to measure length and estimation of very small distances like size of a molecule.
Similarly, measurement of time, accuracy, precision of instruments will also be learnt in this chapter. Different instruments are used to measure different dimensions. One can easily learn the operations of a pendulum clock, Vernier calliper, scale and other instruments required to measure the physical quantities on micro and macro level through this chapter, Units and Measurement. NCERT Grade 11 Physics Chapter 2, Units and Measurement, deals with minute and large ranges of length and mass measurement. It will help the learner to understand the identification of errors during measurement, absolute error, zero error, relative error and other concepts when dealing with measurement and units. This chapter is a part of Unit I. Unit I, II and III in combination hold 23 marks of weightage in the final examination of Grade 11 according to the latest pattern
Get 100 percent accurate NCERT Solutions for Class 11 Physics Chapter 2 (Units and Measurement) solved by expert Physics teachers. We provide solutions for questions given in Class 11 Physics text-book as per CBSE Board guidelines from the latest NCERT book for Class 11 Physics. The topics and sub-topics in Chapter 2 Units and Measurement are given below.
Ex 2.1 - Introduction
Ex 2.2 - The international system of units
Ex 2.3 - Measurement of length
Ex 2.4 - Measurement of mass
Ex 2.5 - Measurement of time
Ex 2.6 - Accuracy, precision of instruments and errors in measurement
Ex 2.7 - Significant figures
Ex 2.8 - Dimensions of physical quantities
Ex 2.9 - Dimensional formulae and dimensional equations
Ex 2.10 - Dimensional analysis and its applications.
We cover all exercises in the chapter given below:-
Chapter 2 - 33 Questions with Solution.
Other than given exercises, you should also practice all the solved examples given in the book to clear your concepts on Units and Measurement. Download the free PDF of Chapter 2 Units and Measurement and take the print out to keep it handy for your exam preparation.