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Q79 (NDA-II/2017) Science & Technology › Basic Science (Physics, Chemistry, Biology) › Geometrical optics Answer Verified

Which one of the following statements is not correct ?

Result
Your answer: —  Â·  Correct: A
Explanation

The human eye is a refracting system that utilizes a converging (convex) lens, not a diverging lens [4]. A convex lens converges light rays to form a real, inverted image on the retina [3]. Statement 2 is correct as the retina contains millions of light-sensitive photoreceptor cells called rods and cones that convert light into electrical signals [1]. Statement 3 is correct because the eye lens naturally forms an inverted (upside down) image on the retina, which the brain then interprets to perceive objects upright [1]. Statement 4 is correct because binocular vision, which uses both eyes to see objects from slightly different angles, is essential for depth perception and accurately judging the relative positions and distances of objects. Therefore, statement 1 is the only incorrect assertion.

Sources

  1. [4] https://www.ncbi.nlm.nih.gov/books/NBK597385/
  2. [1] Science , class X (NCERT 2025 ed.) > Chapter 10: The Human Eye and the Colourful World > 10.1 THE HUMAN EYE > p. 162
  3. [3] Science ,Class VIII . NCERT(Revised ed 2025) > Chapter 10: Light: Mirrors and Lenses > Activity 10.10: Let us investigate > p. 164
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