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Chapter 24: Electromagnetic Waves

College Physics (Urone)
Pages: 865 - 890

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75 Questions for Chapter 24: Electromagnetic Waves

  1. Can an antenna be any length? Explain your answer

    Found on Page 886
  2. Combing your hair leads to excess electrons on the comb. How fast would you have to move the comb up and down to produce red light?

    Found on Page 888
  3. If you live in a region that has a particular TV station, you can sometimes pick up some of its audio portion on your FM radio receiver. Explain how this is possible. Does it imply that TV audio is broadcast as FM?

    Found on Page 886
  4. Electromagnetic radiation having a \(15.0\mu m\)wavelength is classified as infrared radiation. What is its frequency?

    Found on Page 888
  5. Explain why people who have the lens of their eye removed because of cataracts are able to see low-frequency ultraviolet.

    Found on Page 886
  6. Approximately what is the smallest detail observable with a microscope that uses ultraviolet light of frequency \(1.20 \times {10^{15}}{\rm{ }}Hz\)?

    Found on Page 888
  7. How do fluorescent soap residues make clothing look “brighter and whiter” in outdoor light? Would this be effective in candlelight?

    Found on Page 886
  8. A radar used to detect the presence of aircraft receives a pulse that has reflected off an object 6×10-5safter it was transmitted. What is the distance from the radar station to the reflecting object?

    Found on Page 888
  9. Give an example of resonance in the reception of electromagnetic waves.

    Found on Page 886
  10. Some radar systems detect the size and shape of objects such as aircraft and geological terrain. Approximately what is the smallest observable detail utilizing\(500{\rm{ }}MHz\)radar?

    Found on Page 888

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