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Light

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  • Find i,r and q
    i,r = 34 q =56
  • What happens when the critical angle is equal to the incident light ray angle?
    It bends toward the surface.(90 degrees)
  • What is refraction?
    The change of direction of a light ray when it enters or leaves a permanent material
  • What is the relationship between angle of incidence and angle of reflection?
    They are equal
  • Name the phenomenon occurring in the photo.
    Total internal reflection
  • What is dispersion?
    The splitting up of white light.
  • What colors can pass through a blue filter?
    Blue light mainly, a little of indigo, violet and green
  • What happens to the speed of light when when the refractive medium is less dense?
    it increases.
  • What is the phenomenon in the picture called and give a short explanation for it
    Mirage. It happens when light passes through two layers of air with different temperatures.
  • What's the speed of light?
    300,000 km/sec
  • How does light bend when it enters a denser material?
    it bend closer to the normal.
  • Explain how light travels through the image.
    It is reflected through the mirrors to reach the human eye.
  • What is refraction?
    Change of direction of a light ray when it enters or leaves a transparent material
  • Name three applications of total internal reflection.
    Optical fibers, diamonds, mirage
  • Material that doesn't let light pass through it is called an__________
    Opaque material
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