NEET Physics: Electromagnetic Waves — MCQ Test 9

Q6. What is the approximate wavelength range of visible light?

Q7. What is the approximate wavelength range of radio waves as per the document?

Q8. An electromagnetic wave in vacuum has an electric field given by \( E_x = 150 \sin(5 \times 10^3 z - 1.5 \times 10^{12} t) \, \text{V/m} \). What is the angular frequency \( \omega \)?

Q9. Why are infrared detectors used in Earth satellites?

Q10. Why are infrared waves used in remote switches of household electronic systems?

NEET Physics — Electromagnetic Waves

Free MCQ Test 9 of 24

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Medium

What type of electromagnetic waves did Maxwell predict before their experimental discovery?

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About this NEET MCQ Test

This page provides a free online MCQ test for NEET Physics preparation, focusing specifically on the chapter Electromagnetic Waves. It contains 10 carefully selected multiple-choice questions (MCQs) designed to test your conceptual understanding and exam readiness.

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Key concepts covered in this specific test include Electromagnetic, Experimental, Discovery, Inconsistency, Circuital, and Introducing.

Taking these timed MCQ tests helps you simulate the real NEET exam environment. Detailed step-by-step explanations are provided for every question to help you learn from your mistakes and strengthen your fundamentals.

Preview of Questions in this Test

Q1. What type of electromagnetic waves did Maxwell predict before their experimental discovery?

  • A. Electromagnetic waves including light
  • B. Only visible light
  • C. Only gamma rays
  • D. Only infrared waves

Q2. What inconsistency did Maxwell notice in Ampere's circuital law before introducing displacement current?

  • A. Different magnetic fields for different surfaces
  • B. Zero magnetic field everywhere
  • C. Inability to calculate electric fields
  • D. Lack of symmetry with Faraday's Law

Q3. What is the wavelength of an electromagnetic wave in vacuum with frequency \( 50 \, \text{MHz} \)? (Given \( c = 3 \times 10^8 \, \text{m/s} \))

  • A. 4 m
  • B. 6 m
  • C. 8 m
  • D. 10 m

Q4. Why are ultraviolet lamps used in water purifiers?

  • A. To heat the water
  • B. To detect impurities
  • C. To kill germs
  • D. To emit visible light

Q5. According to Maxwell's equations, what does the equation \( \oint \mathbf{B} \cdot \mathrm{d} \mathbf{A} = 0 \) imply?

  • A. No magnetic monopoles exist
  • B. Magnetic fields are always zero
  • C. Electric fields generate magnetic fields
  • D. Magnetic flux is proportional to charge

+ 5 more questions in the actual test

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• Alternating Currents• Atoms And Nuclei• Behaviour Of Perfect Gas And Kinetic Theory• Current Electricity• Dual Nature Of Matter• Electric Charges And Fields• Electromagnetic Induction• Electromagnetic Waves• Electronic Devices• Electrostatic Potential And Capacitance• Electrostatics• Gravitation• Kinematics• Laws Of Motion• Magnetic Effects Of Current And Magnetism• Magnetism And Matter• Mechanical Properties Of Fluids• Mechanical Properties Of Solids• Motion In A Plane• Oscillations• Properties Of Bulk Matter• Ray Optics• System Of Particles And Rotational Motion• Thermal Properties Of Matter• Thermodynamics• Units And Measurements• Wave Optics• Waves• Work Energy And Power

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