NTA has not deleted any new Physics topics for JEE Main 2027. The Physics syllabus has 20 units, the same as 2026.
Communication Systems remains removed; only transistor topics are cut from Semiconductors, and Experimental Skills remains in the syllabus.
- Communication Systems was removed as a whole chapter in 2024 and stays out for 2027.
- Unit 19 (Electronic Devices) continues; only transistor topics were deleted in 2024.
- Unit 20 (Experimental Skills) lists 18 experiments in the official 2027 syllabus.
- The last Physics change came in 2025, when scalars and vectors were removed.
- JEE Main 2027 Session 1 exam is on 20–24 and 28 January 2027; registration closes 22 November 2026.
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- JEE Main 2027 Syllabus Released, No Changes From Last Year
Key Summary
- NTA released the JEE Main 2027 syllabus in October 2026 with no changes compared with 2026.
- Communication Systems: removed in 2024, still out for 2027.
- Semiconductors: diode, Zener diode, LED, photodiode, solar cell and logic gates remain. Transistor topics are deleted.
- Experimental Skills: not deleted. Unit 20 remains in the syllabus.
JEE Main 2027 Physics Deleted Topics: What Changed for 2027?
NTA has not deleted any new Physics topics for JEE Main 2027. Reports on the official syllabus released in October 2026 state that the subject-wise units and topics are the same as the JEE Main 2026 syllabus. The Physics section has 20 units, ending with Experimental Skills.
- The last major deletion in Physics happened in the 2024 syllabus revision, which aligned the syllabus with rationalised NCERT books.
- Several websites list the 2024 deletions under the heading "2027 deleted topics". These are older deletions that continue to apply.
- Students who prepared for JEE Main 2026 do not need to change their Physics plan for 2027.
| Topic in Question | Status in JEE Main 2027 | Deleted When? |
|---|---|---|
| Communication Systems | Removed (whole chapter) | 2024 |
| Semiconductors (Electronic Devices) | Retained, transistor portion removed | 2024 (transistor topics only) |
| Experimental Skills (Unit 20) | Retained | Not deleted |
Check: High weightage chapters for JEE Mains 2027 Physics PDF
Ques. Has NTA deleted any Physics topic from the JEE Main 2027 syllabus?
Ans. No. The JEE Main 2027 syllabus is reported to be the same as 2026. The deletions that students see listed were made in 2024 and still apply.
Ques. Is the JEE Main 2027 syllabus the same as 2026?
Ans. Yes. Reports on the NTA release state that there are no changes in units or prescribed topics compared with the 2026 syllabus.
JEE Main 2027 Physics Deleted Topics: Communication Systems
Communication Systems was deleted as a complete chapter from the JEE Main Physics syllabus in 2024. It was the only Physics chapter removed in full during that revision.
- The chapter covered elements of a communication system, modulation and propagation of electromagnetic waves.
- It is not part of the current 20 units, so no question can be asked from it in JEE Main 2027.
- Students can use the saved time for Electromagnetic Waves and Optics.
Check: JEE Main 2027 Exam Pattern: 75 Questions, 300 Marks, Marking Scheme and Paper Structure
Ques. Is Communication Systems in the JEE Main 2027 Physics syllabus?
Ans. No. The whole chapter was removed in the 2024 revision and has not been brought back in the 2027 syllabus.
JEE Main 2027 Physics Deleted Topics: Semiconductors (Electronic Devices)
Semiconductors is not deleted from JEE Main 2027. Only the transistor portion of Unit 19: Electronic Devices was removed in 2024. The unit continues in the NTA syllabus with diodes and logic gates.
- Deleted in 2024: junction transistor, transistor action, characteristics of a transistor, transistor as an amplifier (common emitter configuration) and oscillator, and transistor as a switch.
- Still in the syllabus: semiconductors, semiconductor diode I-V characteristics in forward and reverse bias, diode as a rectifier, LED, photodiode, solar cell, Zener diode as a voltage regulator and logic gates (OR, AND, NOT, NAND, NOR).
| Unit 19: Electronic Devices | Status |
|---|---|
| Semiconductors, p-n junction diode I-V characteristics | In syllabus |
| Diode as a rectifier | In syllabus |
| LED, photodiode, solar cell | In syllabus |
| Zener diode as a voltage regulator | In syllabus |
| Logic gates (OR, AND, NOT, NAND, NOR) | In syllabus |
| Junction transistor, transistor action, characteristics | Deleted (2024) |
| Transistor as amplifier, oscillator and switch | Deleted (2024) |
Ques. Is Semiconductors deleted from JEE Main 2027?
Ans. No. Semiconductor diodes, Zener diode, LED, photodiode, solar cell and logic gates remain. Only the transistor-related topics were deleted in 2024.
JEE Main 2027 Physics Deleted Topics: Experimental Skills
Experimental Skills continues as Unit 20 in the JEE Main 2027 Physics syllabus. It is not on the 2024 list of deleted Physics units and topics.
- The unit asks for familiarity with the basic approach and observations of standard experiments, such as the Vernier callipers, screw gauge and simple pendulum.
- Some websites claim partial reduction of this unit but do not name any specific experiment, so such claims are unverified.
- The 2024 revision did delete accuracy and precision of measuring instruments from Unit 1: Physics and Measurement. This is a separate unit.
Check: JEE Main Physics Question Papers with Solutions PDF [2026 - 2013]
Ques. Is Experimental Skills deleted from JEE Main 2027 Physics?
Ans. No. Experimental Skills is still listed as Unit 20 in the Physics syllabus. Students should check the official NTA PDF for the exact experiments listed.
Other Physics Topics Deleted in the 2024 Revision
Along with the topics above, the 2024 revision removed these Physics topics, which remain deleted for 2027.
| Unit | Deleted Topics |
|---|---|
| Physics and Measurement | Physics, technology and society; accuracy and precision of measuring instruments |
| Kinematics | Zero vector |
| Gravitation | Geostationary satellites |
| Properties of Solids and Liquids | Reynolds number, Newton's law of cooling |
| Thermodynamics | Carnot engine and its efficiency |
| Oscillations and Waves | Free, forced and damped oscillations; resonance; Doppler effect in sound |
| Current Electricity | Resistances of different materials; colour code for resistors; potentiometer |
| Magnetic Effects of Current and Magnetism | Cyclotron; Earth's magnetic field; magnetic susceptibility and permeability; hysteresis; electromagnets |
| EMI and Alternating Currents | Quality factor |
| Optics | Resolving power of microscopes and astronomical telescopes |
| Dual Nature of Matter and Radiation | Davisson-Germer experiment |
| Atoms and Nuclei | Isotopes, isobars, isotones; radioactivity; radioactive decay law |
| Communication Systems | Whole chapter removed |
| Electronic Devices | Junction transistor and transistor action; transistor as amplifier, oscillator and switch |
Also Check:
| JEE Main 2024 Physics Pattern | JEE Main 2024 Physics Preparation |
| JEE Main 2024 Mock Test | JEE Main Previous Year Question Papers |
Ques. Which Physics topics should students skip for JEE Main 2027?
Ans. Students should skip the topics deleted in 2024, including Communication Systems and the transistor portion of Electronic Devices. All other units, including Experimental Skills, stay in the syllabus.
JEE Main 2027 Physics Deleted Topics asked in JEE Main 2026
| Deleted Topic (Physics) | Linked to (2027 Syllabus Unit) | Observed in JEE Main 2026 | What to Study |
|---|---|---|---|
| Scalars and Vectors | Kinematics, Laws of Motion, Electrostatics and Magnetism | Vector notation for force, electric field and velocity reportedly appeared in 13 of the 19 shifts. | Vector components, unit vectors, and basic vector operations needed for retained topics. |
| Radioactivity and Decay Law | Atoms and Nuclei | An alpha-decay Q-value question reportedly appeared on April 8, Shift 2. | Nuclear mass, mass defect, binding energy and Q-value, as relevant to the retained syllabus. |
| Potentiometer | Current Electricity | Questions involving wire length reportedly appeared on January 21, Shift 2, and internal resistance of a cell on January 28, Shift 1. | Kirchhoff’s laws, metre bridge, resistance and internal resistance, as included in the syllabus. |
| Magnetic Permeability and Susceptibility | Magnetism; Units and Measurements | Relative permeability of 400 in a solenoid reportedly appeared on April 4, Shift 2; a dimensional formula question appeared on January 24, Shift 1. | Magnetic field relations, relevant units and dimensions, and the meaning of permeability in retained concepts. |
| Significant Figures | Units and Measurements | A question involving the sum of measured lengths reportedly appeared on January 21, Shift 2. | Significant-figure rules, measurement precision and error-related concepts retained in the Physics syllabus. |
| Physics Example | Shift | Question Paper |
|---|---|---|
| Potentiometer wire length | January 21, 2026, Shift 2 | Download Paper |
| Potentiometer and a cell shunted with 4Ω | January 28, 2026, Shift 1 | Download Paper |
| Alpha decay of two radioactive substances | April 8, 2026, Shift 2 | Download Paper |
| Relative permeability in a solenoid | April 4, 2026, Shift 2 | Download Paper |
| Forces expressed in vector form | April 4, 2026, Shift 1 | Download Paper |
| Dimension of magnetic permeability | January 24, 2026, Shift 1 | Download Paper |
JEE Main Physics Syllabus Official PDFs: Last 3 Years
Candidates can check the official JEE Main syllabus from the links below:
| Year | Document | Download Link |
|---|---|---|
| 2027 | JEE Main 2027 Syllabus (Paper 1) | View on Official Site |
| 2026 | JEE Main 2026 Syllabus (Paper 1) | View on Official Site |
| 2025 | JEE Main 2025 Syllabus (Paper 1) | View on Official Site |
| 2024 | JEE Main 2024 Syllabus (revision year, Paper 1) | Download PDF |
Ques. Where can students download the official JEE Main 2027 syllabus?
Ans. The official syllabus PDF is available on jeemain.nta.nic.in, the NTA JEE Main website. Students should download it and compare it with the unit list before finalising their preparation plan.
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