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Heat and thermodynamics are important and frequently asked topics in JEE Main and JEE Advanced examinations. They carry an approximate weightage of 6-8% and the candidates can expect 2-3 questions from these topics in their exam.
Last year, 3 questions were asked from these topics in the JEE Main and Advanced examination.
The most asked topics in heat and thermodynamics are the Laws of Thermodynamics, the Carnot Cycle, Heat Transfer, and the Kinetic theory of gases.
Must Read Articles:
- Download JEE Main Last 10-year PYQ for Free
- Download JEE Main 2025 Shift 1 Question Paper with Detailed Solutions
Below is the list of Heat and Thermodynamic questions with detailed solutions asked in JEE Main.
Question 1:
Question 2:
Question 3:
Question 4:
Question 5:
Question 6:
Question 7:
Question 8:
Question 9:
Question 10:
- change in its pressure
- change in its volume
- change in its specific heat
- change in its temperature
JEE Main Physics Exam Pattern
The NTA has updated the JEE Main Physics Exam Pattern for 2025. Earlier, section B allowed candidates to attempt only 5 out of 10 NVQs, but now all 5 are compulsory.
The detailed exam pattern for JEE Main Physics is given below:
| Aspect | Details |
|---|---|
| Mode of Exam | Online Computer-Based Test (CBT) |
| Language of Exam | English, Hindi, Assamese, Bengali, Gujarati, Kannada, Malayalam, Marathi, Odia, Punjabi, Tamil, Telugu, and Urdu |
| Types of Questions | Section A: Multiple Choice Questions (MCQs)Section B: Numerical Value-Based Questions (NVQs) |
| Total Number of Questions | 25 QuestionsSection A: 20 MCQsSection B: 5 NVQs (All mandatory) |
| Marking Scheme | Correct Answer: +4 marksIncorrect Answer: -1 mark (applies to both MCQs and NVQs)Unanswered/Marked for Review: No marks deducted |
| Total Marks | 100 Marks |
JEE Main Physics Chapter-wise Weightage
Mechanics, electrostatics, and Modern Physics are some of the most important topics in the JEE Main Physics section. and these topics carry approximately 35 to 40% weightage in the exam.
The detailed chapter-wise weightage for physics is given in the table below for classes 11th and 12th.
Weightage of Class 11 Topics:
| Chapter | Approximate Weightage |
|---|---|
| Kinematics | 6.6% |
| Laws of Motion | 6.6% |
| Work, Energy & Power | 6.6% |
| Rotational Motion | 6.6% |
| Gravitation | 3.3% |
| Thermodynamics | 6.6% |
| Oscillations & Waves | 6.6% |
Weightage of Class 12 Topics:
| Chapter | Approximate Weightage |
|---|---|
| Electrostatics | 3.3% |
| Current Electricity | 9.9% |
| Magnetic Effects of Current & Magnetism | 6.6% |
| Electromagnetic Induction & Alternating Currents | 6.6% |
| Optics | 6.6% |
| Modern Physics | 6.6% |
| Electronic Devices | 3.3% |
Important Books for Mathematics:
JEE Main Last 5-year Physics Question Paper PDF
You can download the JEE Main last 5 years’ Mathematics pdf with solutions from the table given below:
JEE Main 2024 Physics Question Paper
JEE Main 2024 Physics Question Paper Session 1
| Exam Date | Question Paper | Solution PDF |
|---|---|---|
| JEE Main 2024 Feb 1 Shift 2 Physics Question Paper | Download | Check Solutions |
| JEE Main 2024 Feb 1 Shift 1 Physics Question Paper | Download | Check Solutions |
| JEE Main 2024 Jan 31 Shift 2 Physics Question Paper | Download | Check Solutions |
| JEE Main 2024 Jan 31 Shift 1 Physics Question Paper | Download | Check Solutions |
| JEE Main 2024 Jan 30 Shift 2 Physics Question Paper | Download | Check Solutions |
| JEE Main 2024 Jan 30 Shift 1 Physics Question Paper | Download | Check Solutions |
| JEE Main 2024 Jan 29 Shift 2 Physics Question Paper | Download | Check Solutions |
| JEE Main 2024 Jan 29 Shift 1 Physics Question Paper | Download | Check Solutions |
| JEE Main 2024 Jan 27 Shift 2 Physics Question Paper | Download | Check Solutions |
| JEE Main 2024 Jan 27 Shift 1 Physics Question Paper | Download | Check Solutions |
JEE Main 2024 Physics Question Paper Session 2
| Exam Date and Shift | Question Paper | Solution PDF |
|---|---|---|
| JEE Main 2024 April 4 Shift 1 Physics Question Paper | Download | Check Solutions |
| JEE Main 2024 April 4 Shift 2 Physics Question Paper | Download | Check Solutions |
| JEE Main 2024 April 5 Shift 1 Physics Question Paper | Download | Check Solutions |
| JEE Main 2024 April 5 Shift 2 Physics Question Paper | Download | Check Solutions |
| JEE Main 2024 April 6 Shift 1 Physics Question Paper | Download | Check Solutions |
| JEE Main 2024 April 6 Shift 2 Physics Question Paper | Download | Check Solutions |
| JEE Main 2024 April 8 Shift 1 Physics Question Paper | Download | Check Solutions |
| JEE Main 2024 April 8 Shift 2 Physics Question Paper | Download | Check Solutions |
| JEE Main 2024 April 9 Shift 1 Physics Question Paper | Download | Check Solutions |
| JEE Main 2024 April 9 Shift 2 Physics Question Paper | Download | Check Solutions |
JEE Main 2023 Physics Question Paper
JEE Main 2023 Physics Question Papers are available for both Session 1 and Session 2 here. Candidates can use the links given below to download the shift-wise question paper PDF with solutions.
JEE Main 2023 Physics Question Paper Session 2
| Exam Date | JEE Main Physics Question Paper 2023 |
|---|---|
| 6 April Shift 1 Question Paper | Check Here |
| 6 April Shift 2 Question Paper | Check Here |
| 8 April Shift 1 Question Paper | Check Here |
| 8 April Shift 2 Question Paper | Check Here |
| 10 April Shift 1 Question Paper | Check Here |
| 10 April Shift 2 Question Paper | Check Here |
| 11 April Shift 1 Question Paper | Check Here |
| 11 April Shift 2 Question Paper | Check Here |
| 12 April Shift 1 Question Paper | Check Here |
| 13 April Shift 1 Question Paper | Check Here |
| 13 April Shift 2 Question Paper | Check Here |
| 15 April Shift 1 Question Paper | Check Here |
JEE Main 2023 Physics Question Paper Session 1
| Exam Date and Shift | JEE Main Physics Question Paper 2023 |
|---|---|
| 24 January Shift 1 Question Paper | Check Here |
| 24 January Shift 2 Question Paper | Check Here |
| 25 January Shift 1 Question Paper | Check Here |
| 25 January Shift 2 Question Paper | Check Here |
| 29 January Shift 1 Question Paper | Check Here |
| 29 January Shift 2 Question Paper | Check Here |
| 30 January Shift 1 Question Paper | Check Here |
| 30 January Shift 2 Question Paper | Check Here |
| 31 January Shift 1 Question Paper | Check Here |
| 31 January Shift 2 Question Paper | Check Here |
| 1 February Shift 1 Question Paper | Check Here |
| 1 February Shift 2 Question Paper | Check Here |
JEE Main 2022 Physics Question Paper with Solution PDF
Candidates can check and solve JEE Main 2022 Question Paper for Physics to know the topics with the highest weightage in the exam along with the difficulty level of the questions
JEE Main 2022 Physics Question Paper with Solution PDF- Phase 2
| Exam Date | Shift/ Slot | JEE Main Question Paper PDF |
|---|---|---|
| July 25 | Shift 1 | Check Here |
| July 25 | Shift 2 | Check Here |
| July 26 | Shift 1 | Check Here |
| July 26 | Shift 2 | Check Here |
| July 27 | Shift 1 | Check Here |
| July 27 | Shift 2 | Check Here |
| July 28 | Shift 1 | Check Here |
| July 28 | Shift 2 | Check Here |
| July 29 | Shift 1 | Check Here |
| July 29 | Shift 2 | Check Here |
JEE Main 2022 Physics Question Paper with Solution PDF- Phase 1
| Exam Date | Shift/ Slot | JEE Main Question Paper PDF |
|---|---|---|
| June 29 | Shift 1 | Check Here |
| June 29 | Shift 2 | Check Here |
| June 28 | Shift 1 | Check Here |
| June 28 | Shift 2 | Check Here |
| June 27 | Shift 1 | Check Here |
| June 27 | Shift 2 | Check Here |
| June 26 | Shift 1 | Check Here |
| June 26 | Shift 2 | Check Here |
| June 25 | Shift 1 | Check Here |
| June 25 | Shift 2 | Check Here |
| June 24 | Shift 1 | Check Here |
| June 24 | Shift 2 | Check Here |
JEE Main 2021 Physics Question Paper- Download PDF
JEE Main 2023 aspirants can download and practice physics JEE Main 2021 Question Paper using the links below for each session and shift.
JEE Main 2021 Physics Question Paper with Solution (Session 4- August)- Download PDF
| Exam Date | Shift/ Slot | JEE Main Question Paper PDF |
|---|---|---|
| August 26 | Shift 1 | Check Here |
| August 26 | Shift 2 | Check Here |
| August 27 | Shift 1 | Check Here |
| August 27 | Shift 2 | Check Here |
| August 31 | Shift 1 | Check Here |
| August 31 | Shift 2 | Check Here |
| September 1 | Shift 2 | Check Here |
JEE Main 2021 Physics Question Paper with Solution (Session3- July)- Download PDF
| Exam Date | Shift/ Slot | JEE Main Question Paper PDF |
|---|---|---|
| July 22 | Shift 2 | Check Here |
| July 25 | Shift 1 | Check Here |
| July 25 | Shift 2 | Check Here |
| July 27 | Shift 1 | Check Here |
| August 3 | Shift 1 | Check Here |
| August 3 | Shift 2 | Check Here |
| August 4 | Shift 1 | Check Here |
| August 4 | Shift 2 | Check Here |
JEE Main 2021 Physics Question Paper with Solution (Session 2- March)- Download PDF
| Exam Date | Shift/ Slot | JEE Main Question Paper PDF |
|---|---|---|
| March 16 | Shift 1 | Check Here |
| March 16 | Shift 2 | Check Here |
| March 17 | Shift 1 | Check Here |
| March 17 | Shift 2 | Check Here |
| March 18 | Shift 1 | Check Here |
| March 18 | Shift 2 | Check Here |
JEE Main 2021 Physics Question Paper with Solution (Session 1- February)- Download PDF
| Exam Date | Shift/ Slot | JEE Main Question Paper PDF |
|---|---|---|
| February 24 | Shift 1 | Check Here |
| February 24 | Shift 2 | Check Here |
| February 25 | Shift 1 | Check Here |
| February 25 | Shift 2 | Check Here |
| February 26 | Shift 1 | Check Here |
| February 26 | Shift 2 | Check Here |
Also Check:
JEE Main 2020 Physics Question Paper with Solutions- Download PDF
JEE Main 2020 Question Paper PDFs for Physics are available for download below. The exam was held in two sessions- January and September.
JEE Main 2020 Physics Question Paper with Solutions (Session 2- September)- Download PDF
| Exam Date | Shift/ Slot | JEE Main Question Paper PDF |
|---|---|---|
| September 2 | Shift 1 | Check Here |
| September 2 | Shift 2 | Check Here |
| September 3 | Shift 1 | Check Here |
| September 3 | Shift 2 | Check Here |
| September 4 | Shift 1 | Check Here |
| September 4 | Shift 2 | Check Here |
| September 5 | Shift 1 | Check Here |
| September 5 | Shift 2 | Check Here |
| September 6 | Shift 1 | Check Here |
| September 6 | Shift 2 | Check Here |
JEE Main 2020 Physics Question Paper with Solutions (Session 1- January)- Download PDF
| Exam Date | Shift/ Slot | JEE Main Question Paper PDF |
|---|---|---|
| January 8 | Shift 1 | Check Here |
| January 8 | Shift 2 | Check Here |
| January 9 | Shift 1 | Check Here |
| January 9 | Shift 2 | Check Here |
JEE Main 2019 Physics Question Paper with Solutions- Download PDF
JEE Main 2019 Question Paper PDFs for Physics are available for download for January and April sessions.
JEE Main 2019 Physics Question Paper with Solution (Session 1- April)- Download PDF
| Paper/ Subject | Exam Date | Shift/ Slot | JEE Main Question Paper PDF |
|---|---|---|---|
| B.E./ B.Tech | April 8 | Shift 1 | Check Here |
| B.E./ B.Tech | April 8 | Shift 2 | Check Here |
| B.E./ B.Tech | April 9 | Shift 1 | Check Here |
| B.E./ B.Tech | April 9 | Shift 2 | Check Here |
| B.E./ B.Tech | April 10 | Shift 1 | Check Here |
| B.E./ B.Tech | April 10 | Shift 2 | Check Here |
| B.E./ B.Tech | April 12 | Shift 1 | Check Here |
| B.E./ B.Tech | April 12 | Shift 2 | Check Here |
JEE Main 2019 Physics Question Paper with Solution (Session 1- January)- Download PDF
| Paper/ Subject | Exam Date | Shift/ Slot | JEE Main Question Paper PDF |
| B.E./ B.Tech | January 9 | Shift 1 (Set 2) | Check Here |
| B.E./ B.Tech | January 9 | Shift 2 | Check Here |
| B.E./ B.Tech | January 10 | Shift 1 | Check Here |
| B.E./ B.Tech | January 10 | Shift 2 | Check Here |
| B.E./ B.Tech | January 11 | Shift 1 | Check Here |
| B.E./ B.Tech | January 11 | Shift 2 | Check Here |
| B.E./ B.Tech | January 12 | Shift 1 | Check Here |
| B.E./ B.Tech | January 12 | Shift 2 | Check Here |
Frequently Asked Questions
What is the relationship between heat and thermodynamics?
Heat and thermodynamics are related to each other. Heat refers to the energy transferred between systems due to differences in temperature, while thermodynamics studies energy transfer, including heat, and its effect. Heat acts as a form of energy in thermodynamics that occurs due to temperature difference between two systems.
Does thermodynamics produce heat?
No, thermodynamics does not produce heat, it is the study of heat and energy and their transformation. There are certain proces in thermodynamics that inove heat generation or transfer like exothermic rection, heat transfer mechanisms, work heat conversions, and heat engine devices.
Which law of thermodynamics is heat?
The first law of thermodynamics is related to heat. It is also known as law of energy conversion. This law explains that how heat, work and internal energy are connected. The first law of thermodynamics states that ΔU=Q−W
Where, △ U= Change in internal energy of the system
Q= Heat added to the system
W= Work done by the system
Why does Ice melt in thermodynamics?
In thermodynamics, ice melts due to presence of heat and change in temperature. When ice is in a warmer environment, heat flows from surroundings to ice due to the change in difference. This energy is absorbed by the ice molecules increasing its kinetic energy.
What are the basics of heat and thermodynamics?
The basics of heat and thermodynamics are study of energy transfer and its effect on matter. Thermodynamics defines the movement of energy between systems and its affect on physical properties like temperature, pressure and volume.
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