NEET Physics: Electromagnetic Waves — MCQ Test 1

Q6. What is the relationship between the amplitudes of electric and magnetic fields in an electromagnetic wave in vacuum? (Given \( c = 3 \times 10^8 \, \text{m/s} \))

Q7. What is one environmental concern related to the depletion of the ozone layer mentioned in the document?

Q8. Which frequency range corresponds to short wave bands used for radio communication?

Q9. What is the wavelength range of infrared waves as per the document?

Q10. Why are radio waves effective for long-distance communication?

Q11. Why are microwaves used in domestic microwave ovens?

Q12. An electromagnetic wave in vacuum has a wavelength of \( 12 \, \text{m} \). What is its frequency? (Given \( c = 3 \times 10^8 \, \text{m/s} \))

Q13. What explains the effectiveness of infrared waves in remote sensing applications?

Q14. In a charging capacitor, if the conduction current in the wires is \( 3 \, \text{A} \), what is the displacement current between the plates?

Q15. An electromagnetic wave in vacuum has a frequency of \( 60 \, \text{MHz} \). What is its wavelength? (Given \( c = 3 \times 10^8 \, \text{m/s} \))

NEET Physics — Electromagnetic Waves

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An electromagnetic wave in vacuum has an electric field amplitude of \( 45 \, \text{V/m} \). What is the magnetic field amplitude? (Given \( c = 3 \times 10^8 \, \text{m/s} \))

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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 15 carefully selected multiple-choice questions (MCQs) designed to test your conceptual understanding and exam readiness.

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15
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Key concepts covered in this specific test include Electromagnetic, Electric, Amplitude, Magnetic, Experiment, and Spectrum.

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. An electromagnetic wave in vacuum has an electric field amplitude of \( 45 \, \text{V/m} \). What is the magnetic field amplitude? (Given \( c = 3 \times 10^8 \, \text{m/s} \))

  • A. \( 1 \times 10^{-7} \, \text{T} \)
  • B. \( 1.2 \times 10^{-7} \, \text{T} \)
  • C. \( 1.3 \times 10^{-7} \, \text{T} \)
  • D. \( 1.5 \times 10^{-7} \, \text{T} \)

Q2. What type of electromagnetic waves did Hertz produce in his experiment?

  • A. Radio waves
  • B. Microwaves
  • C. Visible light
  • D. Gamma rays

Q3. In the electromagnetic spectrum, why are gamma rays associated with nuclear processes?

  • A. Low energy emission
  • B. Nuclear energy scales
  • C. Thermal emission
  • D. Visible spectrum

Q4. In a circuit with a capacitor, if the rate of change of electric flux is \( 2 \times 10^{11} \, \text{Vm/s} \), what is the displacement current? (Given \( \varepsilon_0 = 8.85 \times 10^{-12} \, \text{F/m} \))

  • A. 1.77 A
  • B. 0.885 A
  • C. 3.54 A
  • D. 4.42 A

Q5. Which type of electromagnetic waves are produced by the rapid acceleration and deceleration of electrons in aerials?

  • A. Microwaves
  • B. Radio waves
  • C. Infrared waves
  • D. Ultraviolet waves

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