When light rays enter the eye, most of the refraction occurs at the

  1. crystalline lens
  2. outer surface of the cornea
  3. iris
  4. pupil

Answer

The transparent, anterior portion of outer layer of eyeball is termed as cornea which causes most of the bending of incident light rays, i.e. refraction, to make them converge which in turn causes image formation on retina.

The correct option is B.

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