Physics 1 topic 1

Solar system, waves, reflection & refraction, lenses, simple & reflecting telescopes

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1. Why are space telescopes better than telescopes on earth?

  • Because they're bigger so can see more
  • Because They aren't obstructed by our lights, pollution and atmosphere
  • They aren't
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2. What do converging lenses do?

  • Make parallel rays of light converge to a focus
  • Enlarge the image
  • Let parallel rays stay parallel as they go though them

3. In which type of wave are the vibrations at 90 degrees to the direction of travel?

  • Transverse
  • Longitudinal

4. What is the frequency?

  • The number of waves per second
  • The distance from one peak to the next
  • The height of the waves

5. Concave mirrors are?...

  • Convex and bulge outwards
  • Shiny on the inside of the curve
  • Used to converge the rays

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