Q:

Choose the answer that correctly completes the sentence. The “lens” of the human eye

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Choose the answer that correctly completes the sentence. The “lens” of the human eye


  1. is a biconcave lens.
  2. produces more refraction than the cornea.
  3. can have its focal length altered.
  4. consists of rods and cones.

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C: The lens, by having its degree of convexity altered, can have its focal length changed. It is in fact biconvex.

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