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WBCS Preliminary Examination 2022 — General Studies · Question 134 of 200

Q134
General ScienceBiology
Which part of human eye has the maximum refractive index?
  1. a.Aqueous humour
  2. b.Vitreous humour
  3. c.Lens
  4. d.Cornea

Answer: (C) Lens

The cornea has the highest refractive index (approximately 1.376) among the eye's optical components, and it performs about two-thirds of the eye's total optical power. The lens has a variable refractive index of 1.386–1.406 at its core, but in standard optics questions at this level, the cornea is typically cited as having the maximum refractive index.

Q133 Whole paperQ135