Understanding Light and Electromagnetic Radiation
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Questions and Answers

What is the speed of light in vacuum?

  • 299,792,458 m/s (correct)
  • 300,000,000 m/s
  • 400,000,000 m/s
  • 200,000,000 m/s

    • What are the primary properties of light?

  • Intensity, propagation direction, frequency or wavelength spectrum, and polarization (correct)
  • Wavelength, speed, intensity, and polarization
  • Intensity, color, frequency, and propagation direction
  • Color, speed, frequency, and polarization

    • Which electromagnetic radiation can be considered as light?

  • Cosmic rays
  • Sound waves
  • Gamma rays (correct)
  • Pressure waves

    • What is the range of wavelengths for visible light?

    <p>400–700 nanometres (nm)</p> Signup and view all the answers

    What is the main source of natural light on Earth?

    <p>The Sun</p> Signup and view all the answers

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