JEE Main Electromagnetic Waves: Weightage, Key Concepts and Study Plan
Electromagnetic Waves in JEE Main: 85 questions across 2022–2026, rank #19 of 20 in Physics, fading momentum. Year-wise data, key concepts and a study plan.
Edurack
October 21, 2026
Electromagnetic Waves is a lighter chapter in JEE Main Physics and a fading one: its share dropped from 3.5% in 2022–23 to 2.5% in 2024–26. Here is what five years of JEE Main questions say about it, and how to prepare.
At a glance
- 85 questions across 2022–2026, all shifts
- 2.9% of Physics over five years and 2.5% in 2024–2026
- Rank #19 of 20 Physics chapters by recent weight
- Momentum: Fading
- Asked in 5 of 5 years; busiest year 2023 with 25 questions
- 17 questions in the 2026 papers
Year-wise questions
| Year | 2022 | 2023 | 2024 | 2025 | 2026 | Total |
|---|---|---|---|---|---|---|
| Questions | 21 | 25 | 15 | 7 | 17 | 85 |
How Electromagnetic Waves compares inside Physics
| Rank | Chapter | Total Qs | 2024–26 share | Momentum |
|---|---|---|---|---|
| 17 | Kinetic Theory of Gases | 87 | 3.0% | Stable |
| 18 | Gravitation | 100 | 2.8% | Fading |
| 19 | Electromagnetic Waves | 85 | 2.5% | Fading |
| 20 | Experimental Skills | 42 | 1.7% | Stable |
Concepts that repeat
These specific ideas came back most often inside Electromagnetic Waves.
| Concept | 2022 | 2023 | 2024 | 2025 | 2026 | Total |
|---|---|---|---|---|---|---|
| Nature of Electromagnetic Waves | 8 | 10 | 9 | 4 | 4 | 35 |
| Electromagnetic Spectrum | 3 | 5 | 9 | 2 | 1 | 20 |
| Energy Density and Intensity of EM Waves | 7 | 5 | 5 | 1 | 1 | 19 |
| Propagation of Electromagnetic Waves | 8 | 3 | 7 | 0 | 0 | 18 |
Start your practice with these. Each one has appeared in several different years, so it is worth knowing the question styles.
What the syllabus covers
Displacement current, characteristics and transverse nature of electromagnetic waves, the electromagnetic spectrum and its applications.
A checklist to tick off:
- Displacement current
- Characteristics and transverse nature of electromagnetic waves
- The electromagnetic spectrum and its applications
What to focus on
A short, recall-based chapter: the order of the spectrum by wavelength and frequency, the use of each region, and the idea of displacement current.
A study plan for this chapter
Because its share has been shrinking, give it a compact, focused pass and avoid over-investing, but do not skip it. If you divide your Physics time in proportion to recent weightage, this chapter earns about 2% of it.
- Day 1–2: a fast pass over theory and the standard results.
- Day 3: chapter-wise PYQs, then log the mistakes.
- Ongoing: a quick look before each mock test.
Keep reading
- The full ranking: JEE Main Physics chapter-wise weightage
- Next chapter by weight: Experimental Skills
- A heavier neighbour: Gravitation
See Electromagnetic Waves on the weightage page →
Frequently Asked Questions
How many questions has Electromagnetic Waves had in JEE Main?
85 questions across 2022–2026, counting every shift: 2022: 21, 2023: 25, 2024: 15, 2025: 7, 2026: 17.
Is Electromagnetic Waves important for JEE Main Physics?
It ranks #19 of 20 Physics chapters by recent weight, which puts it in tier 3 of 3 for preparation. Its momentum is labelled Fading.
How should I start Electromagnetic Waves?
A short, recall-based chapter: the order of the spectrum by wavelength and frequency, the use of each region, and the idea of displacement current. Then solve chapter-wise previous-year questions.