three parallel beams of light are refracted through a concave Lens. A concave lens is thinner at the centre than at the edges. Rays of light that pass through the lens are spread out (they diverge). A concave lens is a diverging lens.

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Photo credit: © World History Archive / Alamy / Afripics
License: Licensed
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Keywords: archival, archive, beams, concave, historical, history, lens., light, parallel, parallelbeamslightrefractedconcavelensdivergingopticsphysics, refracted