# NCERT Exemplar Class 11 Physics Chapter 2 Solutions: Units and Measurement

NCERT Exemplar Solutions for Class 11 Physics Chapter 2 will make you understand the fundamental units of different measurement quantities. The main topics of the chapter of NCERT Exemplar Class 11 Science include systems of units, the relationship between some mechanical SI units and commonly used units, homogeneity principle, and significant figures. All these topics have been explained in a simple and easy to understand format by the experts at Instasolv.

There are 4 exercises with a total of 44 questions in NCERT Exemplar Problems and Solutions for Class 11 Physics Chapter 2. All these solutions are prepared by expert Physics teachers who have great years of experience. So, if you are facing difficulty while solving the exemplar problems of Chapter 2 – Units and Measurement, then these solutions are sure to help you.

You can refer to these solutions for CBSE exam preparation as well as for competitive exam preparation. Additionally, scoring more marks will become easy for you using our comprehensive solutions. You can follow these solutions online to clear your doubts and make your concepts stronger.

## Important Topics for NCERT Physics Exemplar Solutions Class 11 Chapter 2 – Units and Measurement

**What are Units and Measurements?**

Units and measurement which is available in class 11 physics NCERT Exemplar textbook provide basic knowledge about how the quantities are calculated and the types of units that are used to define them.

**What is the System of Units?**

Some of the common systems of units that are used in class 11 physics are provided below:

- SI system
- FPS system
- CGS system
- MKS system

**What is known as the Fundamental Quantity?**

Assured capacities have been selected as fundamental quantities because physics is measured to be measurable science. They are as follows:

- Time
- Mass
- Length
- Electric Current
- Luminous Intensity
- Amount of Substance
- Thermodynamic Temperature

**What is the SI Unit?**

The term SI Unit stands for the International System of Units which has controlled seven base units to be used to signify quantity around the world. These units are termed as Metre (m), Kilogram (kg), Second (s), Ampere (amp), Kelvin (K), Mole, and Candela.

**Homogeneity Principle**

The principle of homogeneity defines that the measurements of each the terms of a dimensional equation on both sides are similar. Using this principle the particular equation will have identical dimensions on both sides.

**Significant Figures**

Significant figures are defined as each of the digits of a number that are used to precise it to the necessary degree of accuracy, starting from the first non-zero digit.

### Exercise-wise Discussion of NCERT Physics Exemplar Solutions Class 11 Chapter 2 – Units and Measurement

Chapter 2 – Units and Measurement of NCERT Exemplar Problems with Solutions have 4 exercises with a total of 44 questions. The detailed description of these exercises is provided below:

**Exercise 2.1 – Multiple Choice Questions I**

In this exercise of Chapter 2 – Units and Measurement there are a total of 12 multiple choice questions that are based on the concepts of fundamental units of different fundamental quantities. In these questions, you will be provided with the four options, out of those options you have to choose the right answer.

**Exercise 2.2 – Multiple Choice Questions II**

NCERT Exemplar Class 11 for Physics Solutions for Chapter 2 Exercise 2.2 contains a total of 6 questions. These are also multiple-choice questions related to the main topics of the chapter including systems of units, the relationship between some mechanical SI units and commonly used units, homogeneity principle, and significant figures.

**Exercise 2.3 – Very Short Answer Types Questions**

This exercise consists of a total of 6 questions which are very short answer type questions. Practising these questions will provide you with an in-depth understanding of the chapter.

**Exercise 2.4 – Short Answer Type Questions**

This is the last exercise of the chapter and there are a total of 20 questions in total. Practice well to understand the concepts better.

## Why Use NCERT Physics Exemplar Solutions Class 11 Chapter 2 – Units and Measurement by Instasolv?

- NCERT Exemplar Class 11 Solutions Chapter 2 has been prepared by Instasolv keeping in mind to solve all the complex problems of the chapter.
- Our NCERT Exemplar problems with solutions will prove helpful for you to score high marks in your academics as well as the entrance exams.
- These solutions offer appropriate answers to all the Problems in NCERT Physics Exemplar Book Chapter 2.
- In these solutions, even the most difficult problem has been broken down to make your learning easier.
- The solutions offered by Instasolv are updated regularly, which is to the point, detailed and at the same time provides an in-depth overview of chapter 2 – Units and Measurement.