What Are the Main Types and Uses of Electromagnetic Waves?
Strengthen your NEET Physics skills with focused Electromagnetic Waves MCQ practice, vital for mastering wave theory and electromagnetic spectrum concepts. This page delivers 20 exam-style NEET MCQs on electromagnetic waves, matching the latest pattern, with an answer key and explanations. Practice improves accuracy, concept clarity, and boosts NEET Physics scores efficiently.
What are MCQs for Electromagnetic Waves?
Electromagnetic Waves MCQs test your understanding of oscillating electric and magnetic fields, wave propagation, and spectrum classification. These NEET-style questions assess knowledge about speed, properties, sources, and practical uses of electromagnetic waves, ensuring you fully grasp essential Physics Class 12 topics necessary to perform in medical entrance exams.
Why Practice NEET Electromagnetic Waves MCQs?
Regular practice of NEET Physics MCQs sharpens your application skills, boosts time management, and exposes previous year trends. It helps identify gaps in electromagnetic spectrum facts, refines formula usage, and readies you for complex NEET questions. Consistent solving of electromagnetic waves MCQs raises accuracy for crucial exam sections.
Electromagnetic Waves MCQ – Practice Questions
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Which segment of the electromagnetic spectrum has the highest frequency?
A. Ultraviolet rays
B. X-rays
C. Gamma rays
D. Radio waves
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The speed of electromagnetic waves in vacuum is:
A. 3 × 108 m/s
B. 2 × 108 m/s
C. 1.5 × 108 m/s
D. 2.5 × 108 m/s
-
The ratio of electric field amplitude (E0) to magnetic field amplitude (B0) in an electromagnetic wave equals:
A. c2
B. c
C. 1/c
D. 1/c2
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Which phenomenon proves that electromagnetic waves are transverse in nature?
A. Reflection
B. Refraction
C. Polarization
D. Interference
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Electromagnetic waves do NOT require a material medium because:
A. They are mechanical waves
B. They are longitudinal
C. They are transverse
D. They are self-propagating electric and magnetic fields
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After passing unpolarized light through a Polaroid, its intensity becomes:
A. Doubled
B. Halved
C. Zero
D. Unchanged
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Out of the following, which has maximum wavelength?
A. Ultraviolet
B. Microwaves
C. Infrared
D. Radio waves
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The unit of magnetic field (B) in SI is:
A. Henry
B. Tesla
C. Weber
D. Henry/meter
-
Which device operates on electromagnetic induction?
A. Laser
B. Generator
C. LED
D. Solar cell
-
If refractive index of diamond is 2.5, speed of light in diamond is:
A. 1.2 × 108 m/s
B. 2.5 × 108 m/s
C. 7.5 × 107 m/s
D. 3 × 108 m/s
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The electromagnetic wave equation demonstrates that:
A. Electric and magnetic fields are parallel
B. Both fields are perpendicular to each other
C. Both fields are scalar
D. Magnetic field is a scalar
-
Which color of visible light has the shortest wavelength?
A. Red
B. Blue
C. Violet
D. Green
-
Which electromagnetic wave band is used for satellite communication?
A. Visible
B. Ultraviolet
C. Microwave
D. Gamma ray
-
In electromagnetic waves the phase difference between electric and magnetic field vectors is:
A. 0
B. π/2
C. π
D. 2π
-
All electromagnetic waves in vacuum have:
A. Same velocity
B. Same wavelength
C. Same frequency
D. None of these
-
What happens when light travels from air into glass obliquely?
A. Only path changes
B. Wavelength and frequency remain constant
C. Speed and wavelength change, frequency remains same
D. All change
-
Ratio of average electric energy density (uE) to total average energy density (u) in an electromagnetic wave is:
A. 1
B. 1/2
C. 2
D. 1/4
-
Which electromagnetic wave is used in night vision devices?
A. Infrared
B. Microwave
C. X-ray
D. Radio
-
The energy of a photon is directly proportional to its:
A. Wavelength
B. Frequency
C. Velocity
D. Amplitude
-
The velocity of the electromagnetic wave in a medium with refractive index μ is:
A. cμ
B. c/μ
C. μ/c
D. c + μ
-
The frequency of a radio wave is 1 MHz. Its wavelength in free space is:
A. 300 m
B. 150 m
C. 3 m
D. 1.5 m
MCQ Answer Key
| Q.No. | Answer | Explanation |
|---|---|---|
| 1 | C | Gamma rays have the highest frequency in the electromagnetic spectrum. |
| 2 | A | All electromagnetic waves move at 3 × 108 m/s in vacuum. |
| 3 | B | E0/B0 = speed of light, c. |
| 4 | C | Polarization confirms the transverse nature of electromagnetic waves. |
| 5 | D | They are self-propagating due to coupled oscillating fields. |
| 6 | B | Polaroid halves the intensity of unpolarized light. |
| 7 | D | Radio waves have the maximum wavelength among the options. |
| 8 | B | Tesla (T) is the SI unit for magnetic field induction. |
| 9 | B | Generator works using the principle of electromagnetic induction. |
| 10 | A | Speed = c/μ = 3 × 108/2.5 = 1.2 × 108 m/s. |
| 11 | B | Electric and magnetic fields are perpendicular in electromagnetic waves. |
| 12 | C | Violet light has the shortest wavelength in the visible spectrum. |
| 13 | C | Microwaves are used for satellite communication. |
| 14 | A | Both the electric and magnetic fields are always in phase (zero phase difference). |
| 15 | A | All EM waves travel with the same speed in vacuum. |
| 16 | C | Only speed and wavelength change; frequency remains constant across media. |
| 17 | B | The ratio is 1/2; electric and magnetic energy densities are equal. |
| 18 | A | Infrared is used for night vision as it detects heat (thermal radiation). |
| 19 | B | Photon energy is directly proportional to its frequency (E = hν). |
| 20 | B | Wave speed in medium = c/μ, where μ is the refractive index. |
| 21 | A | λ = c/f = 3×108/1×106 = 300 m. |
Explanations clarify reasoning behind each answer and help students understand important NEET concepts.
How These MCQs Help in NEET
Electromagnetic Waves MCQ practice familiarizes you with NEET Physics patterns, sharpens conceptual knowledge, and reduces careless mistakes. Reviewing detailed answer explanations builds confidence and resolves doubts. For further chapterwise MCQ practice, use Vedantu’s Physics Test series and Previous Year Questions pages.
NEET Exam Tips for Electromagnetic Waves
- Revise formulas for wave speed, energy, and electromagnetic spectrum order.
- Practice time-bound mock tests to boost speed and accuracy.
- Focus on tricky concepts like polarization and phase relations.
- Review Physics formula sheets for last-minute revision.
- Analyze wrong answers to eliminate recurring mistakes.
Consistent Electromagnetic Waves MCQ practice raises your NEET Physics accuracy, clarifies key electromagnetic concepts, and strengthens exam readiness. Use Vedantu’s practice tools, answer keys, and expert explanations for continuous score improvement and concept mastery.
FAQs on Electromagnetic Waves Mcq Practice and Answers
1. Where can I find Electromagnetic Waves MCQ for NEET Physics?
Electromagnetic Waves MCQs for NEET Physics can be found on reliable platforms like Vedantu, offering chapterwise practice and solutions.
- Access NEET-style MCQ mock tests curated for Physics and Class 12 syllabus
- Includes examiner-level questions, instant scoring, and answer keys
- Download MCQ PDF for revision
2. Do these questions follow the latest NEET exam pattern?
Yes, all Electromagnetic Waves MCQ questions are designed as per the latest NEET exam pattern.
- Chapterwise format, matching NEET-level difficulty
- Includes negative marking and time limits
- Reflects current Physics syllabus and Class 12 board standards
3. Can I download Electromagnetic Waves MCQ PDF with answers?
Yes, you can download Electromagnetic Waves MCQ PDF with answers from trusted educational sites like Vedantu.
- PDFs include chapterwise MCQs and detailed answer keys
- Suited for NEET and Class 12 Board preparations
- Enables revision and offline practice
4. What is the difficulty level of chapterwise NEET Physics mocks?
The chapterwise NEET Physics mocks for Electromagnetic Waves maintain a moderate to difficult level, matching real exam standards.
- Questions range from conceptual basics to advanced problem-solving
- Balanced for all important subtopics in the chapter
- Simulates NEET exam pressure and timing
5. How many marks are usually asked from this chapter in NEET?
In NEET, Electromagnetic Waves typically contributes around 4–8 marks depending on the year's paper.
- You can expect 1–2 MCQs from this chapter
- Questions cover spectrum, propagation, and applications
- High scoring if concepts and formulas are revised
6. What is electromagnetic waves MCQ?
Electromagnetic Waves MCQ refers to multiple choice questions based on theories, principles, and applications of electromagnetic waves as per Class 12 Physics syllabus and NEET pattern.
- Tests understanding of EM spectrum, wave properties, formulae
- Assesses problem-solving and conceptual clarity
- Directly relevant for NEET, board exams, and medical entrance preparation
7. Are electromagnetic waves important for NEET?
Yes, Electromagnetic Waves is an important chapter for NEET Physics.
- Frequently asked questions on EM spectrum, properties, and applications
- Serves as a foundation for related topics like optics and modern physics
- Good conceptual grasp can help secure easy marks
8. How to solve NEET electromagnetic MCQs?
To solve NEET electromagnetic MCQs, focus on concept clarity and speed.
- Revise key formulas and facts from the EM waves chapter
- Practice timed MCQ sets for accuracy
- Use elimination method for tricky choices
- Review explanations and error analytics post-test
9. Where can I find electromagnetic waves chapterwise tests?
Chapterwise tests on Electromagnetic Waves for NEET Physics are available on platforms like Vedantu and other exam preparation websites.
- Features NEET-style timed MCQs, answer keys, and solutions
- Includes performance analytics for self-assessment
- Free and paid tests are available for comprehensive coverage
10. How can I analyze my weak areas in Electromagnetic Waves after mock tests?
To analyze weak areas after attempting Electromagnetic Waves mock tests:
- Review instant analytics highlighting incorrect and skipped questions
- Check answer explanations for conceptual gaps
- Identify patterns in mistakes and focus revision accordingly
- Use topic-wise performance reports for targeted improvement
