Centre of Mass, Impulse & Momentum- JEE Mains Previous Year Questions with Solutions and weightage

Centre of Mass, Impulse & Momentum is an important section of the Jee Main Physics section. Each year 1-2 questions translating to 4-8 marks are asked.

The important topics include-

• Centre of Mass- calculation for discrete and continuous bodies, motion of COM.
• Linear Momentum & Impulse: Impulse- momentum theorem, conservation of linear momentum.
• Collisions: Elastic and inelastic collisions, coefficient of restitution, centre of mass frame analysis.

The JEE Main Physics paper consists of 25 mandatory questions: 20 multiple-choice questions (MCQs) and 5 numerical value questions (NVQs). It is observed that the ratio of class 11 to class 12 portion in Physics is about 40 : 60.

Must Read Articles:

• Download JEE Main Last 10 year PYQ for Free
• Download JEE Main 2025 Shift 1 Question Paper with Detailed Solutions

Listed below is the list of Centre of Mass, Impulse & Momentum questions with detailed solutions asked in JEE Main:

Question 1:

1. 15 J
2. 10 J
3. 20 J
4. 5 J

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Question 2:

1. 2.0 cm
2. 0.5 cm
3. 1.5 cm
4. 1.0 cm

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Question 3:

1. Both (A) and (R) are true and (R) is the correct explanation of (A)
2. (A) is false but (R) is true
3. ~ Both (A) and (R) are true but (R) is NOT the correct explanation of (A)
4. (A) is true but (R) is false

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Question 4:

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Question 5:

1. 40N, 64N
2. 60N, 80N
3. 88N, 96N
4. 80N, 100N

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Question 6:

1. Both Statement I and Statement II are false
2. Statement I is true but Statement II is false
3. Both Statement I and Statement II are true
4. Statement I is false but Statement II is true

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Question 7:

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Questions 8:

1. 3L
2. 4L
3. 8L
4. 9L

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Question 9:

1. 2.5kg
2. 7.5kg
3. 12.5kg
4. 5kg

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Question 10:

View Solution

JEE Main Physics Paper Pattern 2025

JEE Main 2025 B.E/B.Tech paper will have a total of 90 questions out of which 25 questions will be asked from the physics section.

This year, Physics will be divided into 2 sections, Section A will have 20 MCQs. Section B will have 5 Numerical value answer based questions, out of which candidates have to attempt 5.

JEE Main Physics Chapter - Wise Weightage

Mechanics account for approximately 40 % of the Physics section. The most asked topics from Kinematics in JEE Main and JEE Advanced are Motion Graphs, Relative Velocity, Projectile Motion.

JEE Main Last 5 Year Physic Papers Pdf

Below are the last 5 year Question Paper along with their solutions candidates can check the same for their reference.

JEE Main 2024 Physics Question Paper Session 1

JEE Main 2024 Physics Question Paper Session 2

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

JEE Main 2023 Physics Question Paper Session 1

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

JEE Main 2022 Physics Question Paper with Solution PDF- Phase 1

JEE Main 2021 Physics Question Paper with Solution (Session 4- August)- Download PDF

JEE Main 2021 Physics Question Paper with Solution (Session3- July)- Download PDF

JEE Main 2021 Physics Question Paper with Solution (Session 2- March)- Download PDF

JEE Main 2021 Physics Question Paper with Solution (Session 1- March)- Download PDF

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

JEE Main 2020 Physics Question Paper with Solutions (Session 1- January)- Download PDF

Important Topics Related to Centre of Mass, Impulse & Momentum:

• Uniform Motion: Examples, Graph & Non-Uniform Motion
• Current Electricity Important Questions
• Linear Equations in Two Variables MCQ

Frequently Asked Questions

Is Centre of Mass, Impulse & Momentum important in JEE Mains?

Centre of Mass, Impulse & Momentum is one of the main topics in physics. The major concepts involve - Frame of reference, Newton’s First law of Motion, Newton’s second law of motion, Kinetic Energy, Potential Energy

What is the Centre of Mass, Impulse & Momentum?

The topics include-

• Centre of Mass- calculation for discrete and contious bodies, motion of COM.
• Linear Momentum & Impulse: Impulse- momentum theorem, conservation of linear momentum.
• Collisions: Elastic and inelastic collisions, coefficient of restitution, centre of mass frame analysis.

What is the weightage of Centre of Mass, Impulse & Momentum in JEE Mains?

Centre of Mass, Impulse & Momentum in JEE Main Physics accounts for approximately 3.33%. This translates to about 1-2 questions in the exam. The important topics include - Work-Energy Theorem, Conservation of Energy, Newton's Law and motion, Types of forces, Free Body Diagrams, Friction, Circular Motion and Constraint Motion.

What is the Centre of Mass in Class 12?

The Centre of Mass is the average position of the total mass of a system. It is used for calculation for discrete and continuous bodies, motion of COM. It is observed that the ratio of class 11 to class 12 portion in Physics is about 40 : 60.