Lenses (physics only)
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What lenses do

What lenses do

Side-by-side ray diagrams of a convex lens forming a real inverted image and a concave lens forming a virtual upright image, with focal points and principal axis labelled A lens is a transparent object that forms images by refraction. Light changes direction at each surface because its speed changes when it passes between materials such as air and glass.

Lenses (physics only) Lesson

  1. GCSE
  2. /Physics
  3. /Lenses (physics only)