Other questions in this quiz

2. what is diffraction?

  • When you look in the mirror
  • The spreading of waves when they pass through a gap or past an object
  • The breaking up of light
  • i don't know

3. which of the following gives a use of gamma rays?

  • to protect us
  • to communicate with satellites
  • to kill cancer cells
  • to see objects

4. Which waveband has the shorter range?

  • ---
  • ---
  • UHF
  • LF

5. What direction is the red shift?

  • Right
  • Left
  • Up
  • Down


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