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2. Name a use of radiowaves.

  • washing powder
  • communication
  • sterilizing
  • x rays

3. Name a use of Gamma rays

  • burglar alarm
  • sterilizing food
  • heater
  • communication

4. Which electromagnetic wave has the highest frequency?

  • Visible light
  • X-rays
  • Microwaves
  • Ultra violet
  • Radiowaves
  • Gamma rays
  • Infrared

5. Name a use of infrared.

  • lazer eye surgery
  • microwave cooking
  • radiant heaters
  • sterilizing
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