Electromagnetic Radiation in Communication Systems
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Questions and Answers

What type of radiation do mobile phones and wireless internet use?

  • Ultraviolet rays
  • Gamma rays
  • X-rays
  • Microwaves (correct)
  • Why does Bluetooth use low energy radio waves or microwaves?

  • To avoid wall penetration
  • To increase data transmission speed
  • To pass through walls (correct)
  • To weaken the signal
  • Which type of signal is used by optical fibers for cable television and broadband?

  • Digital signal (correct)
  • Analog signal
  • Infrared signal
  • Ultraviolet signal
  • What is one benefit of digital signaling over analog signaling?

    <p>Increased rate of transmission</p> Signup and view all the answers

    What material is transparent to visible light and used in optical fibers?

    <p>Glass</p> Signup and view all the answers

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