Thermodynamics Weightage in JEE Mains 2025

Thermodynamics Weightage in JEE Mains 2025 is expected to be 15%. For JEE Mains 2025, 4 to 5 questions are expected to be asked in the exam with major topics being Heat Transfer, Laws of Thermodynamics and Thermodynamic Processes. 


 
Thermodynamics Weightage in JEE Mains 2025

Thermodynamics Weightage in JEE Mains 2025: Thermodynamics not only forms an integral part of both physics and chemistry separately but it is also equally crucial in understanding concepts that combine topics from both subjects. Each year, there are 4 to 5 questions directly asked from thermodynamics making it one of the most important topics to score well in the JEE Main exam. Moreover, since the questions from this topic are mostly conceptual and formula-based it is expected that students will score well on this particular topic. To have a complete idea about the JEE Mains 2025 Weightage of Thermodynamics candidates can take a look in this article.

Latest Update : JEE Main session 2 registration has begun on the jeemain.nta.nic.in on February 1, 2025 and the last date to register will be February 24, 2025. Candidates can now register themselves and fill in the JEE Main 2025 application form . The candidates who have registered for the JEE Main session 1 and also want to appear for session 2 will have to apply a fresh application and register themselves on the official website. The JEE Main session 2 2025 will be conducted from April 1 - April 8, 2025.

Also Read: JEE Main Previous Year Question Paper

Expected Thermodynamics Weightage in JEE Main 2025

Candidates can check this table to know about the expected Thermodynamics Weightage in the JEE Main 2025 Exam .

Topics

Expected Weightage

Expected Number of Questions

Thermodynamics

15%

4 to 5

Waves and sounds

9%

2 to 3

Laws of Motion

9%

3 to 4

Electrostatics and Capacitors

15%

4 to 5

Modern Physics

9%

2 to 3

EMI and AC

15%

4 to 5

Units and Dimensions and Errors and Measurements

6%

1 to 2

Current Electricity

12%

3 to 4

Kinematics

3%

0 to 1

Fluid Mechanics

6%

1 to 2

Optics

12%

3 to 4

COM and Rotational Mechanics

18%

5 to 6

MEC and Magnetism

3%

0 to 1

Waves and Sounds

9%

3 to 4

Download: JEE Main Physics Syllabus PDF

Weightage of Thermodynamics in Last Five Years in JEE Mains

Students can check the weightage of Thermodynamics for the last five years.

Year

Number of Questions Asked

2024

3

2023

3

2022

1

2021

2

2018

2

Key Points about Thermodynamics

Candidates can have a look in the below table to know more about thermodynamics.

Particulars

Details

Frequency of Question Each Year

4 to 5

Marks Allotted Each Year

16 to 20

Interlinked Concepts

Zeroth Law

Concepts of Efficiency

Carnot Cycle

Maxwell-Boltzmann Distribution

Specific Heat Capacity and Latent Heat

Heat Transfer

Fluid Mechanics

Electromagnetic Theory

Expected Question Type

Conceptual Questions

Formula Based Questions

Scoring Topics under Thermodynamics

Laws of Thermodynamics

Equations of State and Heat Capacities

Heat Engines and Refrigerators

Thermodynamic Potentials

Heat Transfer

Best Way to Study Thermodynamics in JEE Mains 2025

Candidates can check the below table to focus on those strategies that will help them to attempt all the questions asked from this topic with ease.

Particulars

Details

Topics

What to Study

Key Concepts

Laws of Thermodynamics

  • First And Second Laws
  • Energy Conservation
  • Entropy

Heat Engines and Refrigerators

  • Carnot Cycle
  • Efficiency Formulas

Enthalpy and Internal Energy

Conceptual Shortcuts

  • Direct Proportion: For ideal gas, internal energy (U) is a function of temperature. Therefore, internal energy is directly proportional to changes in temperature
  • Polytropic Processes: If PV n = constant then, isobaric, isothermal and adiabatic processes are identified

Formula Revision

  • Carnot Efficiency
  • Molar Heat Capacities
  • First Law of Thermodynamics
  • Relation between Cp and Cv
  • Isothermal Process

Practise Common Types of Questions

Focus on questions from work done in different thermodynamic processes, efficiency of heat engines, heat transfer, changes in internal energy and work done in a cycle

Use of Graphs, Charts and Diagrams

Interpretation of PV and TS Diagrams

Best Books to Study Thermodynamics in JEE Mains 2025

Candidates can check the list of books to study thermodynamics for JEE Mains 2025 from the below table.

Name of the Book

Name of the Author

Advanced Problems in Physics

Krotov

Thermal Physics

M.W. Zemansky and R.H. Dittman

New Pattern Physics

D.C. Pandey

Physics Galaxy

Ashish Arora

Physics for JEE (Main & Advanced) Volume 2

B.M. Sharma

Problems in General Physics

I.E. Irodov

Thermodynamics and Statistical Mechanics

S.C. Garg, R.M. Bansal, and C.K. Ghosh

Fundamentals of Physics

Halliday, Resnick, and Walker

Understanding Physics for JEE Main & Advanced - Thermal Physics

D.C. Pandey

Concepts of Physics

H.C. Verma

High Weightage Topics of Physics

Candidates can check the list of important topics of physics from the below table.

Chapters

Important Topics from that Chapter

Thermodynamics and Kinetic Theory

  • Laws of Thermodynamics
  • Concepts of Heat And Work
  • Carnot Cycle
  • Maxwell-Boltzmann Distribution
  • Equipartition of Energy

Electromagnetic Waves

  • Electromagnetic Spectrum
  • Speed of Light

Waves and Oscillations

  • Energy in SHM
  • Doppler Effect

Optics

  • Young’s Double-Slit Experiment
  • Huygens’ Principle
  • Optical Instruments
  • Deviation

Mechanics

  • Projectile Motion
  • Laws of Motion
  • Work-Energy Theorem
  • Center of Mass
  • Torque
  • Rotational Dynamics
  • Newton’s Law of Gravitation
  • Kepler’s Laws
  • Escape Velocity

Modern Physics

  • Einstein’s Equation
  • Bohr’s Model
  • Hydrogen Spectrum
  • Nuclear Reactions
  • Fission and Fusion
  • p-n Junction

Electrodynamics

  • Coulomb’s Law
  • Capacitors in Series and Parallel
  • Electrical Instruments
  • Kirchhoff’s Laws
  • Wheatstone Bridge
  • Biot-Savart Law
  • Torque on a Current Loop
  • Magnetic Dipole Moment
  • AC Circuits
  • Lenz’s law
  • LCR Circuits

Related Read:

Candidates preparing for JEE Mains 2025 must check this article to learn more about the JEE Mains 2025 Weightage of Thermodynamics in this article. Stay tuned to Collegedekho for the latest updates on JEE Mains 2025.

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FAQs

Is HC Verma enough for the JEE Main Physics preparation?

HC Verma is an important book for the JEE Main preparation as it comprises good explanations and many practice problems. But it is not enough to solely rely on it. Candidates are required to study NCERT textbooks as well.

Is the JEE Main syllabus reduced?

In the reduced syllabus of the JEE Mains exam, most topics have been removed from Chemistry with 6 units completely removed and around 20 topics removed from 5 other units.

Can candidates skip chapters in the JEE Main exam?

Though it's not wise to skip any topic for the JEE Main exam, however, if one is short on time, candidates can leave low-weightage topics and invest their time on the  important topics.

Can candidates get admission into NIT with 92 percentile in JEE Main?

If the candidates are seeking to get admission into the top-listed IIITs, and NITs, then it will be difficult for them with such a percentile score. However, the reserved category candidates can try their luck to get admission into the IIITs or NITs with 92 percentile marks.

Which is the hardest chapter in JEE Main Physics exam?

The hardest topics in the JEE Main Physics exam comprise Heat and Thermodynamics, Electrostatics and Magnetism, Mechanics, Modern Physics, Current Electricity, Optics, and Electromagnetic Induction.  

Are previous year question papers enough for the JEE Main exam?

No. Candidates should base their JEE Main exam preparation on the previous year's question papers, mock tests and practice tests to ace the JEE Main exam with high marks.

Is it easy to score 170 in the JEE Main exam?

170 marks in the JEE Main exam equals to 98.85+ percentile, which in itself is a very good percentile. Through this, candidates can secure admission into the top premier institutes in India such as NITs, IIITs, and GFTIs.

Which topics have more weightage in the JEE Main Physics paper?

In the JEE Main Physics paper, chapters with the most weightage are Electrostatics, Optics, Current Electricity, and Mechanics whereas the moderate weightage chapters comprise Magnetism, Modern Physics, Waves, and Thermodynamics.

JEE Main Previous Year Question Paper

2024 Physics Paper Morning Shift

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