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Human Eye and Colourful World — Science STD 10 — Question

CBSE BoardEnglish MediumSTD 10ScienceHuman Eye and Colourful World1 Mark
MCQ
When objects at different distances are seen by the eye, which of the following remains constant?
  • A
    The focal length of the eye lens
  • B
    The object distance from the eye lens
  • C
    The radii of curvature of the eye lens
  • D
    The image distance from the eye lens
✓

Answer

  1. The image distance from the eye lens

Explanation:

In the eye, image is always formed at retina which is at a fixed distance in eye.

So, when objects at different distances are seen by the eye, the image distance from the eye lens remains constant by changing radii of curative of the eye lens leading to change in focal length.

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