Units and Dimensions Weightage in JEE Main: Know Weightage, Important Topics, Preparation Tips

Joint Entrance Exam (JEE) Main 2026 ( JEE Main )

DeskCalelnderExam On - 21 Jan '26 - 30 Jan '26

Saakshi Varsha
Saakshi Varsha Lama
Deputy Manager Content
Updated on Dec 13, 2025 15:45 IST
Units and Dimensions Weightage in JEE Main: Candidates should be familiar with weightage of Units and Dimensions topics in JEE Main. Since Units and Dimensions are mostly expected in JEE Mains question paper, it should be prepared well. Read to know more about Units and Dimensions Weightage in JEE Main, preparation tips and more.

Units and Dimensions Weightage in JEE Main is available here. According to previous year papers, Units and Dimensions have had a steady presence in JEE Mains exam, so students should be prepared for it. Knowing weightage of Units and Dimensions topics in JEE Main is very important for preparation. Read to know Units and Dimensions weightage details, important topics, preparation tips and more.

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Units and Dimensions Weightage in JEE Main: Candidates can check here weightage of Units and Dimensions topics in JEE Main. As a fundamental concept, Units and Dimensions is important to test student’s basic knowledge of solving and understanding problems related to physical quantities. According to JEE Mains syllabus weightage, Units and Dimensions are expected to be present in question paper, so students should be prepared for it.

Since Units and Dimensions is a chapter focused on calculations, measurement and comparison, most of the questions in JEE Main exam will be formula based. Knowing important formulas will help students to be prepared well for JEE Mains Units and Dimensions section. Read to know Units and Dimensions Weightage in JEE Main.

Also Read: Most Weightage Chapters for JEE Mains Physics: Check Topics, Preparation Tips, Best Books

Table of contents
  • What is included in JEE Mains Units and Dimensions?
  • Units and Dimensions Weightage in JEE Main (Expected)
  • Most Important Units and Dimensions Topics for JEE Main
  • Preparation Tips for JEE Main Units and Dimensions
  • Why is it important to know JEE Mains chapter wise weightage?

What is included in JEE Mains Units and Dimensions?

JEE Mains Units and Dimensions section focuses on defining physical quantities. Units are standard measures such as meters, kilograms and seconds. On the other hand, Dimensions focuses on representing fundamental physical nature such as mass, length, time and more. Both Units and Dimensions help in dimensional analysis and conversion of physical quantities.

Units and Dimensions Weightage in JEE Main (Expected)

According to previous year’s question paper trends, students can expect 2 percent to 3 percent of the total marks to be estimated weightage of Units and Dimensions in JEE Main. 1 or 2 questions from Units and Dimensions can be expected in JEE Mains question paper. Out of all subtopics, Dimensional Analysis has seen a higher weightage then other subtopics.

What is the estimated weightage for JEE Mains Physics Units and Dimensions?

2 percent to 3 percent in recent years

How many expected number of questions?

Candidates can expect 1 or 2 questions in Physics section from Units and Dimensions

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Most Important Units and Dimensions Topics for JEE Main

Students can check important topics of Units and Dimensions for JEE Main. These are topics which have a higher chance of being included in question paper. While preparing, students should focus extra on these topics while also studying the entire JEE Mains syllabus for Physics.

Units and Dimensions Topics

Description

Dimensional Analysis

Dimensions, Checking Equation Validity, Finding Relationships between physical quantities by expressing them in fundamental dimensions.

Vectors

Displacement, Velocity Force, and Acceleration, requiring specific rules for addition and subtraction.

Error Analysis

Calculation of absolute, relative and percentage errors, Accuracy vs Precision, Applying Propagation Rules for Mathematical Operations.

Vernier Calipers

Measure linear dimensions like length, external and internal diameters, Depth with high accuracy.

Screw Gauge

Measure small dimensions with high accuracy.

Significant Figures

Identifying significant figures

Also Read: JEE Main 2026 Important Chapters & Topics for Physics, Mathematics, Chemistry

Preparation Tips for JEE Main Units and Dimensions

Students should be well prepared for JEE Mains Physics section, to score required marks for admission. Some important JEE Mains preparation tips for Units and Dimensions are given below.

  • Check and know which topics are included in JEE Mains Units and Dimensions syllabus.
  • Students should know high weightage topics and study them. However, full syllabus also has to be reviewed and studied.
  • Mock tests of JEE Main and past questions of Units and Dimensions should be solved regularly.
  • Best reference materials should be used to prepare for JEE Mains Units and Dimensions section.

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Why is it important to know JEE Mains chapter wise weightage?

During preparation, students should know chapter wise weightage of JEE Mains syllabus. This will help them to identify topics which are likely to be used while preparing question paper. Having this knowledge will allow them to prepare a study plan where they can focus on high weightage topics. This also raises their chances of performing well in upcoming examination.

Also Read: Modern Physics Weightage in JEE Mains: Key Topics & Preparation Strategy

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Saakshi Varsha Lama
Deputy Manager Content

Education: B.A. (Hons) in Psychology (Lady Shri Ram College for Women)

Expertise: Engineering Entrance Exam Expert

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The Anant National University JEE Main Cutoff 2024 was released for all rounds and categories for students under the Homes State and All India quota who were seeking admission to the BE/BTech and BArch courses.

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