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6 Written questions

5 Multiple choice questions

  1. used to treat some kinds of cancer
  2. any surface that can reflect light to form an image, a picture, or an object
  3. are given off by people and police may use them to track criminals
  4. used for radio and television broadcasting
  5. the only electromagnetic wave that is visible to the human eye

5 True/False questions

  1. lensa piece of glass or other transparent object that refracts light and produces an image


  2. smoothlight bounces off this type of surface in all directions


  3. microwavesused for radio and television broadcasting


  4. electromagnetic wavescome from the sun and other sources


  5. plane mirrorcurves inward and makes things close to it look larger


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