Physics 1 topic 1

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

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1. What happens when a wave hits a boundary at an angle?

  • It slows down and maintains the same direction
  • It slows down and refracts (one half has hit the boundary first and slows down before the other half causing it to refract)
  • It speeds up and refracts ((one half has hit the boundary first and speeds up before the other half causing it to refract)
  • It speeds up and maintains the same direction
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2. What is the geocentric model?

  • Where the sun, moon, planets and stars all obited the earth
  • Where the moon, planets, earth and the stars all obit the sun

3. Light bends towards the normal when?.... (and slows down)

  • It goes into a denser material
  • It goes into a less dense material

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

  • Because They aren't obstructed by our lights, pollution and atmosphere
  • They aren't
  • Because they're bigger so can see more

5. 'An incident ray parrallel to the axis will pass throught the focal point when its reflected'

  • True
  • False

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