• 1. 
    Which of the following is called heat radiation?

  • X-rays
  • Gamma rays
  • Microwave
  • Infrared radiation
  • 2. 
    Which of the following has a minimum wavelength?

  • Gamma rays
  • Blue light
  • Infrared rays
  • microwave
  • 3. 
    Which among the following has the maximum penetrating power?

  • Radio waves
  • Microwaves
  • Ultraviolet radiation
  • Gamma rays
  • 4. 
    Which of the following are not electromagnetic waves?

  • Cosmic rays
  • Gamma rays
  • β rays
  • X rays
  • 5. 
    10 cm is the wavelength corresponding to the spectrum of

  • Infrared rays
  • Ultraviolet rays
  • Microwaves
  • X-rays
  • 6. 
    The structure of solids is investigated by using

  • Microwaves
  • Gamma rays
  • X-rays
  • Infrared rays
  • 7. 
    Which radiations are used in the treatment of muscle ache?

  • Infrared
  • Ultraviolet
  • Microwave
  • X-rays
  • 8. 
    The ultra-high frequency band of radio waves in the electromagnetic wave is used as in

  • Television
  • Cellular phone communication
  • Commercial FM radio
  • Both a and b
  • 9. 
    The waves used by artificial satellites for communication is

  • Microwaves
  • Infrared waves
  • Radio waves
  • X rays
  • 10. 
    Which of the following electromagnetic waves is used in medicine to destroy cancer cells?

  • IR-rays
  • Visible rays
  • Gamma rays
  • Ultraviolet rays
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