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# NCERT Exemplar Class 11 Physics Chapter 13 Solutions: Kinetic Theory

NCERT Exemplar Solutions for Class 11 Physics Chapter 13 are provided by the expert Physics teachers at Instasolv. Kinetic Theory is one of the easiest chapters in NCERT Exemplar Class 11 Physics. In this chapter, you will read about an ideal gas, which severely follows gas laws such as Charle’s law, Boyle’s law, Gay Lussac’s law, etc. The main topics of the chapter include Graham’s law of diffusion of gases, kinetic interpretation of temperature, the law of equipartition of energy, and degrees of freedom.

Chapter 13 – Kinetic Theory has around 5 exercises and a total number of 31 questions. Practising these NCERT Exemplar Class 11 Physics Problems and Solutions for chapter 13 is very useful for revision work while preparing for the exams. While some questions are difficult to understand on the first go, you will be able to solve the exercise with our guidance. At Instasolv, we always provide step-by-step solutions for all exemplar problems. Our subject matter experts have done thorough research on the topics to create these answers for you. Read them once and solve all your queries quickly.

## Important Topics for NCERT Physics Exemplar Solutions Class 11 Chapter 13 – Kinetic Theory

Kinetic Theory

The kinetic theory of matter defines that all matter is made of small elements that are in random motion and that have space between them. This shows that no substance what phase matter is in, it is made of distinct, moving elements.

Molecular Nature of Matter

According to the atomic theory, all things are made up of small essential units called atoms, which can be stated as tiny elements that move in perpetual motion, which attract or resist each other reliant on their inter-particle distance.

Behaviour of Gases

Gas particles move in unsystematic, straight-line motion. Gas particles hold greater kinetic energy than the elements of a liquid or solid. The greater kinetic energy is due to gases present at higher temperatures than liquids or solids.

Kinetic Theory of an Ideal Gas

The kinetic theory of gases assumes that the gas is a collection of a very large number of elements known as molecules. For an ideal gas, the volume of these molecules is irrelevantly associated with the total volume occupied by the gas.

Law of Equipartition of Energy

The law of equipartition of energy defines that for a dynamical structure in thermal equilibrium the total energy of the system is shared similarly by all the degrees of freedom. The energy-related to each degree of freedom per molecule is 21kT, where k is termed as the Boltzmann’s constant.

Specific Heat Capacity

Specific heat capacity is the amount of heat energy essential to increase the temperature of a material per unit of mass. It is also an example of a wide property since its value is proportionate to the size of the system being inspected.

Mean Free Path

Between every two successive collisions, a gas molecule passes a straight path. The average distance of all the paths of a molecule is known as the mean free path.

### Exercise-wise Discussion of NCERT Physics Exemplar Solutions Class 11 Chapter 13 – Kinetic Theory

Exercise 13.1 – Multiple Choice Questions I

This first exercise of NCERT Exemplar Class 11 Physics Solutions for Chapter 13 contains 8 multiple-choice exemplar problems. In these questions, you will get 4 options, out of which you have to select the right answer to those particular questions.

Exercise 13.2 – Multiple Choice Questions II

Exercise 13.2 also contains 5 multiple-choice exemplar problems. These types of questions help you improve your analytical skills.

Exercise 13.3 – Very Short Answer Type Questions

Chapter 13 Exercise 13.3 contains 6 very short answer type exemplar problems based on ideal gas, which severely follows gas laws such as Charle’s law, Boyle’s law, and Gay Lussac’s law.

Exercise 13.4 –Short Answer Type Questions

This exercise has a total of 7 exemplar problems. All these questions are short answer type questions related to the main topics of the chapter including Graham’s law of diffusion of gases, kinetic interpretation of temperature, Law of equipartition of energy, and degrees of freedom.

Exercise 13.5 –Long Answer Type Questions

Long answer type questions are helpful in better understanding of the topics. In this exercise, you will find 5 such exemplar problems. Practising these questions will help score well in the exams.

## Why Use NCERT Physics Exemplar Solutions Class 11 Chapter 13 – Kinetic Theory by Instasolv?

• Instasolv provides you with the best quality, accurate, and effective NCERT Exemplar Problems with Solutions for Class 11 Physics Chapter 13.
• These NCERT Exemplar solutions can help you to understand difficult topics easily and after that, you can solve questions quickly.
• With the help of these Problems in the NCERT Exemplar Book, you can achieve good marks in CBSE class 12 board exam.