Electromagnetic Waves Weightage in JEE Main 2025

Soham Mitra

Updated On: December 03, 2024 11:34 AM | JEE Main

Electromagnetic Waves Weightage in JEE Main 2025 is expected to be 3. 3% which is equal to 3 to 4 marks in the exam. Check the year-wise weightage of Electromagnetic Waves in JEE Main along with important topics here. 
Electromagnetic Waves Weightage in JEE Main 2025

Electromagnetic Waves Weightage in JEE Main 2025 is expected to be 3.3% of Physics Section total weightage. Test takers can expect 1 to 2 questions in JEE Main 2025 exam. The Electromagnetic Waves chapter has primary significance in the JEE Main exam. Some of the important topics of Electromagnetic Waves are
Displacement Current, Electromagnetic Waves and their Characteristics, Transverse Nature of Electromagnetic Waves, Electromagnetic Spectrum, Radio Waves, Microwaves, Infrared, Visible, Ultraviolet, X-rays. Gamma rays, Applications of e.m. Waves etc. The Electromagnetic Waves chapter is important as it deals with how waves are produced and what are the properties of electromagnetic waves. Aspirants of the JEE Main 2025 exam . must master these topics to score well in the Physics sections.

Latest update: NTA has released the JEE Main 2025 exam dates! JEE Main 2025 exam will be conducted from January 22 to 31, 2025.

JEE Main 2025 candidates are required to prepare for all the subjects in the appropriate manner. Aspirants of JEE Main 2025 must be aware of the chapter-wise weightage for each subject for effective preparation. Some topics with high weightage in the JEE Main physics syllabus are Motion and Equilibrium, Mechanics, Master Forces etc. Candidates can check the weightage and sub-topics of Electromagnetic Waves in the article.

Also Read: JEE Main 2025 Exam Pattern

An Overview of Electromagnetic Waves

Electromagnetic waves comprise of an electric field vector and a magnetic field vector which are both perpendicular to each other as well as the direction of propagation of the wave. Electromagnetic waves comprise topics such as Maxwell’s equations and Lorentz force formula which make all the basic laws of electromagnetism. It also comprises the concept of displacement current which helps comprehend the continuity of the current between the plates of the capacitor. It includes the electromagnetic wave velocity concept and properties of electromagnetic waves such as the transverse nature of the wave, intensity of electromagnetic waves, momentum and radiation pressure of the waves.

Types of Electromagnetic Waves

Electromagnetic waves encompass a spectrum which comprises various types, each characterized by distinct properties and applications.

  • Radio Waves: Such waves have the longest wavelengths and are utilized in communication systems such as radios and broadcasting.
  • Microwaves: With shorter wavelengths than radio waves, microwaves power microwave ovens, communication technology, and radar systems.
  • Infrared Waves: Beyond microwaves, such waves are used in night vision technology, remote controls, and thermal imaging.
  • Visible Light: The only segment perceivable by the human eye, enabling vision and serving diverse applications from photography to optical communications.
  • Ultraviolet Waves: Just beyond visible light, used in sterilization, fluorescent lighting, and skin tanning.
  • X-Rays: Higher-energy waves used in medical imaging (X-rays) and security screening.
  • Gamma Rays: The shortest wavelength and highest energy, used in cancer treatment and exploring nuclear reactions.
Check Also: JEE Main Previous Year Question Paper

Expected Electromagnetic Waves Weightage in JEE Main 2025

The expected Electromagnetic Waves Weightage in JEE Main 2025 has been provided in the following table.

Units

Weightage in Percentage

Electromagnetic Waves

3.3%

Expected Number of Questions

1 or 2 Question

Marks Allocation

3 to 4 Marks (Assuming each question is worth 4 marks)

    Also Read: Best JEE Main Coaching Institutes in India

    JEE Main Electromagnetic Waves Weightage 2024

    Students planning to appear for JEE Main 2025 exam, can have a glance at the shift-wise Electromagnetic Waves Weightage of JEE Main 2024 in the given table below.

    Chapter

    Total Ques

    Jan 27 Shift 1

    Jan 27 Shift 2

    Jan 29 Shift 1

    Jan 29 Shift 2

    Jan 30 Shift 1

    Jan 30 Shift 2

    Jan 31 Shift 1

    Jan 31 Shift 2

    Feb 1 Shift 1

    Feb 1 Shift 2

    Electromagnetic Waves

    8

    1

    1

    0

    1

    1

    1

    1

    1

    0

    1

    JEE Main Electromagnetic Waves Weightage of Last Five Years

    Check out the last five years' JEE Main Electromagnetic Waves Weightage here.

    Year

    Unit

    Total Questions in First Session

    Total Questions in Second Session

    2023

    Electromagnetic Waves

    8 (Jan Session)

    9 (April Session)

    2022 Electromagnetic Waves

    9 (June Session)

    5 (July Session)

    2021 Electromagnetic Waves + Communication Systems 7 (February Session)
    11 (March Session)
    9 (July Session)
    2020 Electromagnetic waves 13 Questions in Total
    2019 15 Questions in Total

    JEE Main Best Books 2025 for Physics

    Physics is one of the toughest papers to crack in any competitive examination since it consists of its fundamental concepts. Below are a few of the best books, which help candidates to score good marks in the JEE Main entrance exam.

    • Understanding Physics Electricity and Magnetism by DC Pandey

    • Understanding Physics for JEE Main and JEE Advanced by DC Pandey

    • Complete Physics for JEE main by I E Irodov

    • Concepts of Physics (Volume 1 and 2) by H C Verma

    • Problems in General Physics by I E Irodov

    Important Topics of Electromagnetic Waves in JEE Main 2025

    In the JEE Main 2025 exam, questions on electromagnetic waves generally cover a range of topics, focusing on the fundamental principles and their applications. The key areas of JEE Main include:

    • Maxwell's Equations - They are the foundation of electromagnetic theory, including Gauss's laws for electricity and magnetism, Ampere-Maxwell law and Faraday's law of induction.
    • Electromagnetic Spectrum - It includes the various types of electromagnetic waves (radio waves, microwaves, infrared, visible light, ultraviolet, X-rays, gamma rays), their wavelength ranges, along with their detection and production methods.
    • Wave Properties - Concepts such as wave propagation,  polarization, speed of light in various media, and wave interference are important
    • Application of Theory - It involves questions where one has to apply the wave equations to scenarios involving wave behaviour, such as reflection, transmission, and energy transport via the Poynting vector.
    • Numerical Problems - It comprises numerical problems dealing with the electric and magnetic fields in a plane wave, the energy transmitted by these waves​ and the speed of electromagnetic waves in different media.

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    For more such updates regarding the JEE Main 2025 and other exams stay tuned with Collegedekho .

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