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JEE Main - Kinetic Theory of Gases Notes (Free PDF Download)

Last updated date: 26th May 2024
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Score High in JEE Main 2025: Kinetic Theory of Gases Notes With Important Topics

Vedantu is providing JEE Main Kinetic Theory of Gases Notes with Important Topics to score high in JEE Main 2025. Expert Vedantu master Teachers prepare these JEE Main Notes to empower your journey toward success. You can easily download the FREE PDF of these Notes from Vedantu’s website. The main features of JEE Main notes are simplified concepts and compact notes on important topics and theories.


JEE Main Revision Notes


Text, Images, Videos and PDF


JEE Main

Chapter Name:

Kinetic Theory of Gases

Academic Session:



English Medium



Available Material:

Chapter-wise Notes with PDF

The  Kinetic Theory of Gases chapter covers molecular explanations for the behavior of gases. This is a crucial chapter for JEE Main Exams, and you can expect at least 2 questions from it. Check out how many questions were asked from the Kinetic Theory of Gases chapter in the last five years of JEE Main exams.

Year Wise Weightage of Questions: JEE Main Kinetic Theory of Gases

Sl. No.


Average No. of Questions Asked

Marks per Question

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Take advantage of the opportunity to boost your preparation with our Kinetic Theory of Gases Notes. These notes cover the entire JEE Main Physics syllabus; you can download them for FREE.

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Important Topics from Kinetic Theory of Gases JEE Main 2025

Below are some important topics students must consider while studying the Kinetic Theory of Gases chapter. These topics are picked from the previous year’s JEE Main exams. Hence, before downloading the Revision notes, you can go through the list of important topics in this chapter:

  • Ideal Gas Law and Equation of State

  • Kinetic Theory and Molecular Motion

  • Kinetic Energy and Temperature

  • Degrees of Freedom and Equipartition of Energy

  • Mean Free Path and Collision Frequency

  • Real Gases and Deviations from Ideal Behavior

  • Kinetic Interpretation of Pressure and Boyle's Temperature

  • Specific Heat Capacities of Gases

  • Effusion and Diffusion

  • Real Gas Behavior and Graphical Representations

  • Derivation of Gas Laws from Kinetic Theory

  • Kinetic Interpretation of Pressure and Temperature

JEE Main Physics Notes: Chapter-wise links 2025

Download for Free and Learn JEE Main Physics Chapter-wise Notes. Get the links from the table below:

How Kinetic Theory of Gases Can Shape Your JEE Main 2025 Journey?

Gas Molecules in Motion:

  • Imagine a bustling crowd – that's how gas molecules are in constant motion!

  • The Kinetic Theory of Gases unveils this dance of particles, explaining how they zoom around at different speeds.

Temperature's Play:

  • Temperature isn't just a number – it's the energy of gas molecules' motion.

  • The hotter it is, the more energetic the dance becomes. Cooler? They slow down.

Tiny but Powerful:

  • Gas molecules are teeny-tiny, but they pack a punch!

  • Their collisions create pressure – that's what pushes tires and inflates balloons.

Elastic Collisions:

  • When gas molecules collide, they're like bouncy balls.

  • They don't lose energy – it's conserved. So they bounce off, changing speed and direction.

Ideal vs. Real:

  • Ever heard of "ideal" gases? They follow Kinetic Theory to the letter.

  • Real gases get cozy and stick together sometimes. Kinetic Theory explains why they might not be "ideal" pals.

Mean Free Path:

  • Imagine a busy street – gas molecules "walk" in zigzags.

  • The distance they travel before bumping into others is the "mean free path." Busy streets mean shorter paths!

Brownian Motion:

  • Even in still air, pollen dances. Thanks to gas molecules!

  • This "Brownian motion" is like a microscopic disco – tiny pollen particles jitter around.

Absolute Zero:

  • Imagine the coldest chill – that's absolute zero, where molecules stand still.

  • You can't reach it, but the Kinetic Theory gives us a sneak peek into the coldest dance floor.

Practical Magic:

  • Kinetic Theory isn't just for the lab – it's everyday magic!

  • From understanding air pressure to why a balloon inflates, it's like seeing the world with scientific glasses.

Beyond the Classroom:

  • Kinetic Theory isn't just about exams – it's about understanding the air we breathe and the gases that fill our world.

  • So, put on your scientific explorer's hat and dive into the mesmerizing world of Kinetic Theory!

Power of Equations: How Formulas Amplify Revision Note Learning

Equations aren't just symbols; They're your key to solving problems in Physics. By grasping formulas, you'll tackle complex concepts effortlessly and boost your confidence. Dive into the world of equations along with JEE Main Physics Revision Notes and amplify your study sessions. Explore our Physics formula pages to start your preparation journey of JEE Main today!

Important Formulas from Kinetic Theory of Gases:

  1. Ideal Gas Law: \[ PV = nRT \]

  2. Root Mean Square Speed $v_{rms}$: \[ v_{\text{rms}} = \sqrt{\dfrac{3kT}{m}} \]

  3. Average Speed $\bar{v}$: \[ \bar{v} = \sqrt{\dfrac{8kT}{\pi m}} \]

  4. Most Probable Speed $v_{mp}$: \[ v_{\text{mp}} = \sqrt{\dfrac{2kT}{m}} \]

  5. Pressure $P$ in terms of Kinetic Energy: \[ P = \dfrac{1}{3} n \bar{v} \]

  6. Relation between $v_{rms}, \bar{v},$ and $v_{mp}$: \[ v_{\text{rms}} = \sqrt{3} \bar{v} = \sqrt{2} v_{\text{mp}} \]$

Other Important Links for JEE Main 2025 Kinetic Theory of Gases 

Discover the links of extra resources beyond JEE Main 2025 Kinetic Theory of Gases notes. Check out other important links that open doors to learning, practice papers, mock tests, and insights. Boost your readiness, conquer challenges, and embrace success by using these resources made just for JEE Main 2025.

Here are the links for the additional resources of JEE Main 2025:

Enhance Your Results with Vedantu’s JEE Main Notes

As you work hard to do well in JEE Main 2025, think of Kinetic Theory of Gases Notes as your helpful friend. They simplify hard things, show what's important, and let you practice, which improves your study. Vedantu's JEE Main Notes help you, and you'll understand things, solve problems without fear, and do well in the exam. Get the Kinetic Theory of Gases Revision Notes for FREE to get better and succeed in JEE Main 2025.

FAQs on JEE Main - Kinetic Theory of Gases Notes (Free PDF Download)

1. What is the Kinetic Theory of Gases in the context of JEE Main 2025?

The Kinetic Theory of Gases, relevant for JEE Main 2025, explains the behavior of gases based on their individual particles' motion and collisions. It relates macroscopic properties like pressure, temperature, and volume to the microscopic motion of gas molecules. It's crucial for understanding gas laws and thermodynamics in physics.

2. How can I apply Kinetic Theory of Gases to solve JEE Main problems?

To apply the Kinetic Theory of Gases in solving JEE Main problems, first, understand concepts like pressure, temperature, and volume in terms of molecular motion. Use equations like the ideal gas law and Maxwell-Boltzmann distribution to relate parameters. Apply these principles to analyze gas behavior, energy distribution, and related phenomena in various scenarios.

3. What are some strategies to effectively use Kinetic Theory of Gases notes for JEE Main 2025 preparation?

Strategies to effectively use Kinetic Theory of Gases notes for JEE Main 2025 preparation are:

  • Regularly review your notes to reinforce concepts.

  • Practice solving various types of problems to build problem-solving skills.

  • Focus on understanding the applications and implications of each law.

  • RelateTheoretical concepts to real-world scenarios mentioned in your notes.

4. Which are the important topics of Kinetic Theory of Gases Notes for JEE Main 2025?

The important topics covered in the Kinetic Theory of Gases Notes for JEE Main 2025 include:

  • Kinetic Interpretation of Temperature

  • Pressure and Gas Laws

  • Kinetic Energy and Distribution of Speeds

  • Mean Free Path

  • Kinetic Interpretation of Pressure

  • Degrees of Freedom

  • Real Gases and Deviation from Ideal Behavior

  • Equipartition of Energy

  • Maxwell-Boltzmann Distribution

  • Effusion and Diffusion

  • Collisions and Elasticity

  • Law of Equipartition of Energy

  • Specific Heats of Gases

  • Work Done and Heat Absorbed

5. Which is the easiest topic of JEE Main 2025 Kinetic Theory of Gases Notes?

The basic concepts is often considered the easiest topic in the Kinetic Theory of Gases for JEE Main 2025. It covers fundamental ideas such as the kinetic molecular theory, gas laws, and the ideal gas equation. Understanding particle behavior and basic gas properties can provide a solid foundation for tackling more complex concepts.

6. Where can I find additional resources to supplement JEE Main 2025 Kinetic Theory of Gases Notes?

You can discover supplementary resources to enhance JEE Main 2025 Kinetic Theory of Gases preparation through Vedantu’s website. These resources offer practice papers, video lectures, interactive quizzes, and discussions that complement your JEE Main notes, enriching your understanding and exam readiness.

7. What is the weightage of Kinetic Theory of Gases Notes for JEE Main 2025?

The weightage of the Thermodynamics chapter in JEE Main 2025 is around 10-12%. This means that there are typically 2-3 questions asked from this chapter.

8. How much time is required to prepared for JEE Main 2025 Kinetic Theory of Gases Notes?

The time required to prepare for JEE Main 2025 Kinetic Theory of Gases Notes varies based on your familiarity with the concepts, study habits, and practice efforts. On average, a few weeks of consistent study, including active reading, problem-solving, and revision, should provide a solid foundation. However, it's essential to tailor your study plan to your learning pace and commit sufficient time for comprehensive understanding and practice.