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November 25, 2025
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When students begin their JEE Main preparation, one question comes up again and again:
“Which NCERT Physics chapters give the most marks in JEE Main?”
This is a very smart question, because not all chapters have the same weightage. Some chapters are asked every year, some give direct questions, and some are easier to score from if your basics are strong.
So in this blog, I'll explain the most important NCERT Physics chapters for JEE Main, in a simple and clear way.
Why NCERT Physics Is Important for JEE Main
Before we start, let's understand one thing clearly:
NCERT Physics alone is not enough for solving JEE numerical problems.
But NCERT is essential for building your base. NCERT helps you with:
- Clear concepts
- Basic formulas
- Accurate definitions
- Understanding theory in the simplest way
Once NCERT is strong, solving higher-level questions becomes much easier.
1. Current Electricity
Current Electricity is one of the easiest and most scoring chapters.
Why it helps you score:
- Questions are straightforward
- Formulas are simple
- Concepts are not confusing
- JEE Main mostly asks direct application-based questions
If you understand Ohm's Law, resistors, series-parallel combinations, and basic circuits, you can easily score 4–8 marks from this chapter.
2. Ray Optics and Optical Instruments
This chapter is asked every single year.
Why it's important:
- Lens and mirror formula-based questions are common
- Sign conventions are predictable
- NCERT gives clear diagrams and explanations
- Optical instruments (microscope, telescope) also give direct theory questions
Once you get used to image formation and formulas, you will find this chapter very comfortable.
3. Wave Optics
Wave Optics is a very scoring chapter because questions are usually theory-based or formula-based.
Important topics include:
- Young's double-slit experiment
- Interference patterns
- Diffraction
- Polarization
NCERT explains this chapter beautifully, and JEE Main often uses NCERT-style questions here.
4. Electrostatics
Electrostatics is a core Physics chapter and gives questions almost every year.
Why it is high scoring:
- Concepts are simple once you understand basics
- Electric field, potential, and Gauss's Law are commonly asked
- NCERT theory is very clear and easy to follow
If your concepts are strong, this chapter can easily give you free marks.
5. Semiconductor Electronics
This chapter is a gift for JEE Main students.
Why?
- Very easy concepts
- Light theory
- NCERT covers everything needed
- JEE asks mostly theory-based or directly NCERT-based questions
Students who prepare this chapter properly almost never get it wrong.
6. Modern Physics
Modern Physics is one of the most important scoring areas.
Important topics include:
- Photoelectric effect
- Atomic models
- Nuclear physics
- Radioactivity
JEE Main questions from Modern Physics are predictable and formula-based. NCERT explanations make it very easy to understand.
7. Units, Dimensions, and Error Analysis
This chapter may look small, but JEE asks at least one question from it.
Important topics:
- Dimensional formulas
- Error calculation
- Significant figures
These questions take very little time to solve and give guaranteed marks.
8. Magnetism and Moving Charges
This chapter carries high weightage and gives 1–2 questions in most papers.
Important areas:
- Magnetic force
- Moving charges in magnetic fields
- Biot–Savart law
- Ampere's law
The theory is explained clearly in NCERT, and once your basics are clear, the numerical problems become manageable.
9. Kinematics and Laws of Motion
These chapters appear simple, but they are extremely important because they are the base for many other topics.
Why they matter:
- Many physics concepts start from here
- Questions are easy but require conceptual clarity
- NCERT explains motion graphs, equations, and Newton's laws very well
If your basics are strong here, many other chapters become easier.
10. Work, Energy and Power
JEE Main loves this chapter.
Why it's scoring:
- Concepts are small
- Questions are very formula-based
- NCERT explains everything clearly
This chapter also connects with many other areas of physics.
Final Tips to Use NCERT for JEE Main Physics
Here's how to use NCERT effectively:
- Read the theory slowly and understand it.
- Highlight definitions, diagrams, tables, and important lines.
- Practice all NCERT solved and unsolved questions.
- Revise the important formulas regularly.
- After understanding NCERT, solve PYQs and your coaching modules.
Remember, NCERT gives you the foundation. Once your basics are solid, the advanced part becomes easier.
Conclusion
If you want to score well in JEE Main Physics, focus on the chapters listed above. These chapters give the highest number of marks almost every year, and NCERT explains all of them very clearly. If you study them properly and revise regularly, you will notice a big improvement in your accuracy and confidence.
Frequently Asked Questions
1. Is NCERT Physics enough to score well in JEE Main?
NCERT is essential for building strong concepts and understanding theory, but it is not enough alone. After finishing NCERT, you should practice PYQs and numerical problems from coaching material or reference books to score well.
2. Which NCERT Physics chapters have the highest weightage in JEE Main?
Chapters like Current Electricity, Ray Optics, Modern Physics, Electrostatics, Semiconductors, and Magnetism usually contribute the most marks and are asked almost every year.
3. How many questions in JEE Main Physics come directly from NCERT theory?
Usually 1–3 questions are either directly theory-based or very close to NCERT examples, especially from Semiconductors, Modern Physics, and Wave Optics.
4. Should I read NCERT line-by-line for Physics like Chemistry?
You don't need to memorize every line, but you should carefully read: Definitions, Diagrams, Derivations (basic understanding), Examples and tables. These areas are often used to frame conceptual questions.
5. Which chapters are easiest to score from in Physics for JEE Main?
Most students find these chapters easiest and most scoring: Current Electricity, Semiconductors, Units & Dimensions, Modern Physics, Work, Energy & Power.
6. How much time should I spend on NCERT Physics before moving to advanced problems?
Ideally, spend 1–2 focused readings per chapter. Once you understand concepts and formulas clearly, start solving PYQs. Don't stay stuck only on theory for too long.
7. Do numerical questions in JEE Main come directly from NCERT examples?
Sometimes the concept or formula is taken directly from NCERT examples, but the numbers or situation are usually changed. So practicing examples is very helpful.
8. Which NCERT diagrams are important for JEE Main Physics?
Pay special attention to diagrams from: Ray Optics (ray diagrams), Wave Optics (YDSE setup), Semiconductor devices, Electric field and Gauss's law. Diagram-based conceptual questions are quite common.
9. Can I skip low-weightage chapters in Physics?
It's not recommended. JEE Main sometimes asks unexpected questions, so you should at least cover basics of every chapter, even if you focus more on high-weightage ones.
10. What is the best strategy to revise NCERT Physics quickly before the exam?
✔ Revise formulas and short notes
✔ Look at important diagrams
✔ Solve PYQs chapter-wise
✔ Review highlighted lines in NCERT
This ensures quick and effective revision.
✔ Look at important diagrams
✔ Solve PYQs chapter-wise
✔ Review highlighted lines in NCERT
This ensures quick and effective revision.
