The Units, Dimensions, and Vectors are important topics in the JEE Main Physics exam, Their collective weightage is about 2-3% and 3 to 4 questions are expected from these topics in the exam. Specifically from Units and Dimensions which include concepts like dimensional analysis as well as unit conversions along with error calculations, while Vectors include multiple operations such as addition, subtraction, scalar with vector products, and applications across many physical contexts.
The JEE Main Physics contains 25 questions. 20 MCQ-based and 5 Numerical value-based questions, with the marking scheme of +4 for correct answers and -1 for incorrect answers only for MCQs, there is no negative marking in Numerical value-based questions.
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Listed below is the list of Units, Dimensions, and Vectors questions with detailed solutions asked in JEE Main.
Question 1.
- Both Statement I and Statement II are false.
- Statement I is true but Statement II is false.
- Both Statement I and Statement II are true.
- Statement I is false but Statement II is true.
Question 2.
Question 3.
- (A)-(III), (B)-(IV), (C)-(I), (D)-(II)
- (A)-(III), (B)-(IV), (C)-(II), (D)-(I)
- (A)-(I), (B)-(IV), (C)-(III), (D)-(II)
- (A)-(IV), (B)-(III), (C)-(II), (D)-(I)
Question 4.
Question 5.
Question 6.
Question 7.
Question 8.
- Statement (I) is incorrect but statement (II) is correct
- Both statement (I) and statement (II) are incorrect
- Statement (I) is correct but statement (II) is incorrect
- Both statement (I) and statement (II) are correct
Question 9.
Question 10.
- A–II, B–I, C–IV, D–III
- A–I, B–II, C–III, D–IV
- A–III, B–IV, C–II, D–I
- A–IV, B–III, C–II, D–I
Question 11.
Question 12.
- Both assertion (A) and reason (R) are true & reason (R) is the correct explanation of assertion.
- Both assertion (A) and reason (R) are true but reason (R is not correct explanation of assertion.
- Assertion (A) is true and reason (R) is false.
- Assertion (A) is false and reason (R) is false.
Question 13.
- 0.51
- 0.85
- 1.02
- 1.70
Question 14.
- 1%
- 4%
- 8%
- 7%
Question 15.
- 5%
- 4.33%
- 3%
- 3.33%
JEE Main Physics Paper Pattern
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.
| Section | Number of Questions | Attempt Requirement | Marking Scheme | Total Marks |
|---|---|---|---|---|
| Section A (MCQs) | 20 | 20 | +4 for the correct answer, -1 for each incorrect answer | 80 |
| Section B (Numerical) | 5 | 5 | +4 for the correct answer No negative marking | 20 |
| Total | 25 | 25 | - | 100 |
JEE Main Physics Weightage
The Current Electricity has the highest weightage in JEE Main Physics i.e. 9.9% with the expected 3 questions in the exam. It is a key topic and requires focused learning.
Magnetic Effects of Current and Magnetism and Modern Physics each contribute 6.6% and can expect at least 2 questions from these topics. These topics appear in the exam frequently.
Whereas, Electrostatics, Heat, as well as Thermodynamics, Optics, Units, and Dimensions, along with Vectors, in addition to Kinematics each, contribute around 3.3% with just 1 question. These topics help in understanding the more advanced topics.
The topics that carry the lowest weightage in JEE Main Physics are Laws of Motion, Work, Energy, and Power, Rotational Motion, Gravitation, Simple Harmonic Motion, Solids and Fluids, Waves, Electromagnetic Induction, and Alternating Currents with 1 question each. Though they carry less weight, they play a crucial role in understanding a general idea of Physics.
| Chapter | Weightage (%) | Number of Questions |
|---|---|---|
| Current Electricity | 9.9% | 3 |
| Magnetic Effects of Current and Magnetism | 6.6% | 2 |
| Modern Physics | 6.6% | 2 |
| Electrostatics | 3.3% | 1 |
| Heat and Thermodynamics | 3.3% | 1 |
| Optics | 3.3% | 1 |
| Units, Dimensions, and Vectors | 3.3% | 1 |
| Kinematics | 3.3% | 1 |
| Laws of Motion | 3.3% | 1 |
| Work, Energy, and Power | 3.3% | 1 |
| Rotational Motion | 3.3% | 1 |
| Gravitation | 3.3% | 1 |
| Simple Harmonic Motion | 3.3% | 1 |
| Solids and Fluids | 3.3% | 1 |
| Waves | 3.3% | 1 |
| Electromagnetic Induction | 3.3% | 1 |
| Alternating Currents | 3.3% | 1 |
JEE Main Last 5 Year Physics Papers Pdf
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 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- 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 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 |
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 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 |
Important Topics Related to Units, Dimensions & Vectors
Frequently Asked Questions
Q1. What is the weightage of unit and dimensions in JEE Mains?
Answer: The weightage of unit and dimensions in JEE Mains Physics is about 3.3%, the students can expect 1 question in the exam, focusing on topics like dimensional analysis, unit conversions, and the application of these concepts in various physical situations.
Q2. Are units and dimensions important for JEE?
Answer: Yes, Units and Dimensions are important for JEE Main. Although this topic may carry the weightage of only 3.3% and only 1 question comes in the JEE Main exam as per previous years' analysis, but helps in understanding many advanced topics in Physics like dimensional analysis, unit conversions, and the use of dimensions in deriving relationships.
Q3. Which is the hardest chapter in JEE Mains?
Answer: Based on the weightage, previous years’ analysis, and student’s feedback, the hardest chapter in JEE Mains are:
Modern Physics and Electromagnetic both have the highest weightage of 6.6% among the hardest chapters. Modern Physics includes tricky topics like photoelectric effect, atomic models, and nuclear physics, which require a solid understanding of both theory and problem-solving techniques. The Electromagnetic Chapter involves understanding concepts like Faraday’s Law, Lenz's Law, self and mutual induction, and solving AC circuit problems, which requires intensive knowledge of maths.
Other are Optics and Rational Motion, even though they have a weightage of 3.3% but these chapters are conceptually hard in nature as these include topics like wave optics, diffraction, and interference that require conceptual clarity and torque, angular momentum, moment of inertia, and rotational kinematics, which are difficult for students to visualize and apply.
| Chapter | Reason for Difficulty | Weightage (%) |
| Modern Physics | Conceptually challenging topics like photoelectric effect, nuclear physics, and atomic models. | 6.6% |
| Electromagnetic Induction & AC | Requires understanding of mathematical formulations, AC circuits, and laws like Faraday's. | 6.6% |
| Optics | Involves complex theories like diffraction, interference, and optical instruments. | 3.3% |
| Rotational Motion | Difficult to visualize concepts like torque, moment of inertia, and angular momentum. | 3.3% |
| Fluid Mechanics | Requires understanding of principles like Bernoulli’s theorem, viscosity, and surface tension. | 3.3% |
| Kinematics | Challenging to apply equations of motion in 2D and 3D, and related concepts. | 3.3% |
| Thermodynamics | Requires a deep understanding of laws of thermodynamics and concepts like entropy. | 3.3% |
Q4. Can I skip units and measurements for JEE?
Answer: No, You should not skip the Units and Measurements chapter for JEE, While these topics have relatively low weightage i.e. 3.3% and only 1 question is expected from these topics in the exam, but these topics help in understanding the dimensional analysis, unit conversions, and the proper use of SI units is key to solving problems in almost every topic of Physics, such as Mechanics, Electromagnetism, and Thermodynamics.
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