NCERT Book PDF Class 11 Physics Chapter 11 Thermodynamics

Download the Class 11 Physics Chapter 11 Thermodynamics NCERT Book PDF, the official 2026-27 NCERT textbook chapter. It sets out the laws that govern heat, work and internal energy, and it is the source of most conceptual and numerical questions in the Boards, JEE Main, JEE Advanced and NEET.

• Official NCERT 2026-27 chapter, clean and print-ready.
• Covers the zeroth, first and second laws, thermodynamic processes and the Carnot engine.
• Read it alongside the solved exercises and the formula sheet linked below.

This Class 11 Physics Chapter 11 Thermodynamics NCERT Book PDF is the official 2026-27 NCERT text, checked page by page against the latest edition.

What Class 11 Physics Chapter 11 Thermodynamics Covers

The chapter builds the laws of heat step by step. It moves from thermal equilibrium and the zeroth law to the first law, then to processes, the second law and the Carnot engine. The official NCERT sections are listed below.

Key Concepts You Will Study

Students should read the chapter with a pen and note each law as it appears. The ideas connect heat, work and the direction of natural processes.

• The zeroth law and how it defines temperature through thermal equilibrium.
• The first law, dQ = dU + dW, and its use in each process.
• Isothermal, adiabatic, isobaric and isochoric processes on the P-V diagram.
• The second law and the two statements of Kelvin-Planck and Clausius.
• The Carnot cycle and the formula for maximum possible efficiency.

Why Download the NCERT Book PDF for This Chapter

The NCERT textbook is the single most important source for the CBSE exam, and most JEE and NEET questions from this chapter are built directly on its examples.

• Every Board question on the first law and Carnot engine comes from this text.
• The worked examples show the correct sign convention for heat and work.
• Reading offline from the PDF avoids missing any P-V diagram or derivation.

How to Use the NCERT Book PDF for Thermodynamics

Read the chapter once fully, then work through it a second time with the exercises open. A short, ordered plan keeps the sign conventions from tripping you up.

• Read each section, then write its key relation in your own words in a single line.
• Draw the P-V diagram for each process yourself before checking the book figure.
• Solve the in-text examples before looking at the given solution.
• Attempt the back exercises, then check them against the NCERT Solutions below.

Other Class 11 Physics Thermodynamics Resources

Pair the textbook PDF with the solved answers, revision notes and formula sheet for the same chapter.

FAQs on Class 11 Physics Chapter 11 NCERT Book PDF