Other questions in this quiz

2. What wave is used in fibre optic communication?

  • Ultraviolet
  • Visible light
  • Infa-red
  • Microwave

3. Which of these is a true property of Radio Waves?

  • It is detected by photographic film
  • It is visible
  • It has a very large wavelength
  • It can cook food.

4. What is the source of Infa-red waves

  • Hot objects
  • Radioactive material
  • Luminous objects
  • Special circuits

5. Which of these block X-Rays

  • Steel
  • Titanium
  • Lead
  • Iron

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