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Human Eye and Colourful World — Science STD 10 — Question

CBSE BoardEnglish MediumSTD 10ScienceHuman Eye and Colourful World1 Mark
MCQ
Myopia occurs due to :
  • A
    Increase in the focal length of eye lens
  • B
    Decrease in the distance between retina and lens
  • ✓
    Decrease in the focal length of the eye lens
  • D
    Increase in the distance between retina and lens
✓

Answer

Correct option: C.
Decrease in the focal length of the eye lens
Myopia is the term used to define short sightedness.
Light from a distant object forms an image before it reaches the retina.
This is because the eye ball is too large, or the cornea or crystalline lens is too strong.
This results in decrease in focal length of eye lens, whereas the distance between retina and lens is always constant.

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