NEET Physics: Electromagnetic Waves — MCQ Test 19

Q6. The ozone layer protects the Earth by absorbing which type of electromagnetic waves?

Q7. What type of charges produce electromagnetic waves as per the document?

Q8. An electromagnetic wave in vacuum has an electric field amplitude of \( 90 \, \text{V/m} \). What is the magnetic field amplitude? (Given \( c = 3 \times 10^8 \, \text{m/s} \))

Q9. What type of charges produce electromagnetic waves according to the document?

Q10. Why are visible light waves critical for human vision?

NEET Physics — Electromagnetic Waves

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What is the significance of the equation \( \oint \mathbf{E} \cdot \mathrm{d} \mathbf{l} = -\frac{d \Phi_B}{dt} \) in Maxwell's equations?

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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 Significance, Equation, Equations, Wavelength, According, and Document.

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Preview of Questions in this Test

Q1. What is the significance of the equation \( \oint \mathbf{E} \cdot \mathrm{d} \mathbf{l} = -\frac{d \Phi_B}{dt} \) in Maxwell's equations?

  • A. It describes the induction of an electric field by changing magnetic flux
  • B. It describes the induction of a magnetic field by changing electric flux
  • C. It states that magnetic monopoles exist
  • D. It relates electric flux to charge

Q2. What is the typical wavelength range of radio waves according to the document?

  • A. \( 1 \, \text{mm} \) to \( 700 \, \text{nm} \)
  • B. \( > 0.1 \, \text{m} \)
  • C. \( 400 \, \text{nm} \) to \( 0.6 \, \text{nm} \)
  • D. \( 10^{-10} \, \text{m} \) to \( 10^{-14} \, \text{m} \)

Q3. What is the wavelength range of ultraviolet rays as per the electromagnetic spectrum?

  • A. \( 1 \, \text{mm} \) to \( 700 \, \text{nm} \)
  • B. \( 400 \, \text{nm} \) to \( 0.6 \, \text{nm} \)
  • C. \( 10 \, \text{nm} \) to \( 10^{-4} \, \text{nm} \)
  • D. \( 700 \, \text{nm} \) to \( 400 \, \text{nm} \)

Q4. What is the primary source of a magnetic field as per Maxwell's generalization?

  • A. Only conduction current
  • B. Only stationary charges
  • C. Both conduction current and time-varying electric field
  • D. Only magnetic monopoles

Q5. A parallel plate capacitor with plate area \( A = 0.02 \, \text{m}^2 \) and separation \( d = 5 \, \text{mm} \) is connected to a circuit with a current of \( 2 \, \text{A} \). What is the rate of change of electric flux between the plates? (Given \( \varepsilon_0 = 8.85 \times 10^{-12} \, \text{F/m} \))

  • A. \( 2.26 \times 10^{11} \, \text{Vm/s} \)
  • B. \( 1.13 \times 10^{11} \, \text{Vm/s} \)
  • C. \( 4.52 \times 10^{11} \, \text{Vm/s} \)
  • D. \( 5.65 \times 10^{11} \, \text{Vm/s} \)

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