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# NCERT Exemplar Class 11 Physics Chapter 12 Solutions: Thermodynamics

NCERT Exemplar Solutions for Class 11 Physics Chapter 12 deals with the concepts of thermodynamics. It is a part of Physics in which heat converts into other forms of energy and vice-versa. It includes the study of the main part of the systems, i.e., at the macroscopic level. There are three laws of thermodynamics including zeroth law, first law, and second law. Other main topics of the chapter of NCERT Exemplar Class 11 Physics include thermodynamic state variables, thermodynamic processes, equation of state, heat, work, and internal energy.

NCERT Exemplar Problems for CBSE Class 11 Physics Chapter 12 has a total of 5 exercises and around 27 exemplar problems. All the exercises consist of different types of questions including the short answer type, long answer type, fill in the blanks, true or false statement, and objective type questions. All the questions are explained well with the help of examples to help you clear your concepts.

At Instasolv, we provide you with the pointwise explanations for the exercise questions to make you understand their answers easily. Through NCERT Exemplar Problems Class 11 Physics Solutions for chapter 12, we make sure that you perform better in the exams.

## Important Topics for NCERT Physics Exemplar Solutions Class 11 Chapter 12 – Thermodynamics

Thermodynamics

Thermodynamics is the branch of physics that compacts with the associations between heat and other forms of energy. In particular, it defines how thermal energy is transformed into and from other forms of energy and how it affects matter.

Thermal Equilibrium

The condition under which two materials in physical contact with each other transfer no heat energy to one another. Two materials in thermal equilibrium are said to be at a similar temperature.

Zeroth Law of Thermodynamics

When a body ‘X’ is in thermal equilibrium with another body ‘Y’, and also independently in thermal equilibrium with a body ‘Z’, then body ‘Y’ and ‘Z’ will also be in thermal equilibrium with one another. This statement describes the zeroth law of thermodynamics. This law is related to the temperature measurement.

First Law of Thermodynamics

The first law of thermodynamics describes that the energy of the universe remains constant. Though it may be transformed between the system and the atmosphere, it can’t be created or destroyed. The law mainly transmits to the changes in energy states due to work and heat transfer. It also describes the concept of conservation of energy.

Second Law of Thermodynamics

The second law of thermodynamics describes that any naturally happening process will always lead to the growth in the entropy of the universe. This statement describes the first law of thermodynamics.

Reversible and Irreversible Processes

The reversible process is the supreme process which never happens, while the irreversible process is the natural process that is usually found in nature.

Carnot Engine

Carnot engine is a theoretic thermodynamic cycle projected by Nicolas Léonard Sadi Carnot in the year 1824. Carnot describes that a hot body is required to produce heat and a cold body to which the caloric is transported, which generates mechanical work in the process.

Equation of State

An equation of state is defined as the connecting state variables that define the state of matter under a certain set of physical conditions, such as pressure, temperature, volume, or internal energy.

### Exercise-wise Discussion of NCERT Physics Exemplar Solutions Class 11 Chapter 12 – Thermodynamics

Exercise 12.1 – Multiple Choice Questions I

Exercise 12.1 of Chapter 12 has 6 multiple-choice exemplar problems based on the concept of thermodynamics. Practising these questions will make you understand that it is a part of Physics in which heat converts into other forms of energy and vice-versa.

Exercise 12.2 – Multiple Choice Questions II

This exercise of NCERT Exemplar Class 11 Physics Solutions Chapter 12 consists of 5 exemplar problems. These questions are also multiple-choice questions. Practice well for your better understanding.

Exercise 12.3 – Very Short Answer Type Questions

Exercise 12.3 consists of 5 very short answer types exemplar problems based on three laws of thermodynamics including zeroth law, first law, and second law.

Exercise 12.4 –Short Answer Type Questions

This exercise has around 6 exemplar problems that are completely related to the main topics of this chapter including thermodynamic state variables, thermodynamic processes, equation of state, heat, work, and internal energy.

Exercise 12.5 –Long Answer Type Questions

This exercise set has a total of 5 exemplar problems in which you need to give a proper explanation of the situation mentioned.

## Why Use NCERT Physics Exemplar Problems with Solutions Class 11 Chapter 12 – Thermodynamics by Instasolv?

• NCERT Exemplar Class 11 Physics Problems and Solutions for Chapter 12 will help you have an in-depth understanding of all the concepts of the chapter.
• The language used in the exemplar is very easy to understand.
• Any doubts related to any difficult topic will be cleared if you will study these solutions accurately.
• The problems in NCERT Exemplar Book are solved by the experts at Instasolv and follow the CBSE curriculum.
• Referring to the study material provided by Instasolv will not only help you prepare for the academic exam but also for the competitive exams.
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