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Light and optics

WJEC 3420QS — matched to your course.

Reflection, refraction, lenses, image formation and optical measurements.

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Light and optics

Tailored to WJEC 3420QS.

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Subtopics and study areas

  • Apply the laws of reflection and explain refraction using changing wave speed.
  • Apply the law of reflection.
  • Explain refraction in terms of a change of wave speed.
  • Relate changes of speed and wavelength while frequency remains constant.
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