Courses
Courses for Kids
Free study material
Offline Centres
More
Store Icon
Store

Electromagnetic Waves Important Questions for NEET Physics - 2026

ffImage
banner

Practice Electromagnetic Waves Important Questions - Free PDF Download

Electromagnetic Waves is an essential chapter in the Physics syllabus for NEET. If you are preparing for NEET, this page from Vedantu brings you handpicked NEET Important Questions with Answers on Electromagnetic Waves. These questions help you focus on topics that often appear in the exam.


This chapter covers the fundamental principles of electromagnetic waves. You will learn about their nature, properties, electromagnetic spectrum, and wave propagation. All these syllabus subtopics are included to help you study clearly.


Practicing these questions builds concept clarity and improves your revision. You can download the Vedantu NEET Important Questions PDF for free on this page. Strengthen your Physics preparation with these key questions on Electromagnetic Waves.


Practice Electromagnetic Waves Important Questions - Free PDF Download

1. Multiple choice questions.


Q1. In electromagnetic waves, the electric and magnetic fields are:


  • (a) Parallel to each other and perpendicular to the direction of propagation
  • (b) Perpendicular to each other and perpendicular to the direction of propagation
  • (c) Perpendicular to each other but parallel to the direction of propagation
  • (d) None of these

Answer: (b) Perpendicular to each other and perpendicular to the direction of propagation


Q2. Which of the following electromagnetic waves has the highest frequency?


  • (a) Gamma rays
  • (b) Infrared rays
  • (c) Radio waves
  • (d) Microwaves

Answer: (a) Gamma rays


Q3. The speed of electromagnetic waves in a vacuum is:


  • (a) $3 \times 10^5$ m/s
  • (b) $3 \times 10^8$ m/s
  • (c) $3 \times 10^6$ m/s
  • (d) $3 \times 10^7$ m/s

Answer: (b) $3 \times 10^8$ m/s


Q4. The source of electromagnetic waves is:


  • (a) Accelerated charges
  • (b) Stationary charges
  • (c) Magnetic monopoles
  • (d) None of the above

Answer: (a) Accelerated charges


Q5. Which region of the electromagnetic spectrum is used for satellite communication?


  • (a) Infrared rays
  • (b) Visible light
  • (c) Microwaves
  • (d) Ultraviolet rays

Answer: (c) Microwaves


2. Very Short Answer (VSA).


Q1. Define electromagnetic waves.


Answer: Electromagnetic waves are oscillating electric and magnetic fields that propagate through space, carrying energy, without the need for a material medium.


Q2. Name one natural source of electromagnetic waves.


Answer: The Sun is a natural source of electromagnetic waves.


Q3. What is the phase difference between electric and magnetic fields in an electromagnetic wave?


Answer: The electric and magnetic fields are in the same phase in an electromagnetic wave.


Q4. Which part of the electromagnetic spectrum is used for sterilizing medical instruments?


Answer: Ultraviolet (UV) rays are used for sterilizing medical instruments.


3. Short Answer Questions.


Q1. Briefly explain how electromagnetic waves are produced by oscillating charges.


Answer: Accelerated or oscillating charges create changing electric and magnetic fields. According to Maxwell’s equations, these time-varying fields sustain and regenerate each other, allowing the electromagnetic wave to propagate through space, carrying energy away from the source even in the absence of any medium.


Q2. State Maxwell’s contribution to the theory of electromagnetic waves.


Answer: Maxwell postulated that a time-varying electric field produces a magnetic field and vice versa. He provided four fundamental equations unifying electricity and magnetism, predicting the existence and speed of electromagnetic waves, and showing that light is an electromagnetic wave.


Q3. What is the ratio of the magnitudes of electric to magnetic field in an electromagnetic wave in free space? Show with a formula.


Answer: The ratio is given by $E/B = c$, where $c$ is the speed of light in vacuum. Hence, the magnitude of the electric field is $c$ times that of the magnetic field in an electromagnetic wave in free space.


Q4. Arrange the following electromagnetic radiations in order of increasing wavelength: X-rays, Visible light, Gamma rays, Microwaves.


Answer: In order of increasing wavelength: Gamma rays < X-rays < Visible light < Microwaves.


4. True or False Questions.


Q1. Electromagnetic waves require a material medium to propagate.


Answer: False


Q2. Infrared rays have higher frequencies than ultraviolet rays.


Answer: False


Q3. The oscillating electric and magnetic fields in an electromagnetic wave are always perpendicular to each other.


Answer: True


Q4. The velocity of electromagnetic waves in air is almost equal to that in a vacuum.


Answer: True


3. Fill in the Blanks Questions.


Q1. The electric field and the magnetic field in an electromagnetic wave are __________ to each other.


Answer: perpendicular


Q2. The unit of frequency of electromagnetic waves is __________.


Answer: hertz (Hz)


Q3. The part of the electromagnetic spectrum used in remote controls is __________.


Answer: infrared


Understanding Electromagnetic Waves for NEET Success

Learning about electromagnetic waves helps NEET aspirants build strong basics in Physics. These concepts appear often in the exam and cover real-world applications. At Vedantu, we support your targeted NEET preparation by focusing on such high-weightage topics.


Mastering Electromagnetic Waves gives you an edge. This topic combines NCERT basics and practical physics facts, helping you answer both direct and tricky questions. With regular practice, you can boost your speed and accuracy in NEET Physics.


Prepare with Vedantu to learn each NEET-important concept in a student-friendly way. These notes help you revise formulas, clarify doubts, and build the confidence to solve electromagnetism questions smoothly in your upcoming exam.


WhatsApp Banner

FAQs on Electromagnetic Waves Important Questions for NEET Physics - 2026

1. What types of important questions from Electromagnetic Waves are frequently asked in NEET exams?

NEET often features conceptual MCQs, assertion-reason type, and numericals on Electromagnetic Waves. Focus on basics like properties of EM waves, Maxwell’s equations, wave equations, and electromagnetic spectrum. Be ready for questions linking concepts to real-life applications, and those requiring quick calculations.

2. Which subtopics in Electromagnetic Waves should I prioritise for exam-focused questions?

Prioritise these subtopics for NEET practice:

  • Maxwell's equations and displacement current
  • Nature and transverse character of EM waves
  • Electromagnetic spectrum
  • Speed of EM waves in different media
  • Uses of electromagnetic waves

3. How can I identify expected numericals from Electromagnetic Waves for NEET?

Look for formula-based problems involving speed, frequency, wavelength, and energy calculations. Common numericals require direct use of $c = \lambda \nu$ and Maxwell's relations. Practice questions on displacement current, wave propagation, and comparison between different regions of the spectrum.

4. What are some NEET-style assertion-reason questions from this chapter?

Assertion-reason questions often test your ability to link theory and logical reasoning. For example, they may ask about the transverse nature of EM waves or the role of displacement current. Always check if both the statement and explanation are correct, and if the explanation matches the assertion.

5. Are diagram-based questions important for Electromagnetic Waves?

Yes, diagram-based questions can appear in NEET. Common figures include EM wave propagation, field directions, and annotated electromagnetic spectrum charts. Practice labeling and interpreting such diagrams, as they help you visualise key concepts quickly.

6. What revision strategy helps with chapter-wise practice of NEET important questions?

Follow a focused approach:

  1. Revise all formulae and definitions from Electromagnetic Waves.
  2. Solve past NEET important questions and targeted MCQs.
  3. Attempt mixed question sets (MCQs, assertion-reason, numericals) to test understanding.
  4. Review conceptual errors and clarify doubts regularly.

7. What common mistakes do students make while solving NEET questions on Electromagnetic Waves?

Students often overlook unit conversions, misread spectrum order, or confuse formulas. To avoid these:

  • Write formulas clearly before solving
  • Review the sequence of the electromagnetic spectrum
  • Double-check SI vs. CGS units in calculations