Physics 0625 · IGCSE · Light

Light — practice question

The diagram illustrates white light travelling through a prism. Which description of what occurs as the light enters the prism is correct?

  • AThe speed of the red light is less than the speed of the violet light and the red light is the least refracted.
  • BThe speed of the red light is greater than the speed of the violet light and the red light is the least refracted.
  • CThe speed of the violet light is less than the speed of the red light and the violet light is the least refracted.
  • DThe speed of the violet light is greater than the speed of the red light and the violet light is the least refracted.

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