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The focal length of the eye lens increas...

The focal length of the eye lens increases when eye muscles

A

are relaxed and lens becomes thinner

B

contract and lens becomes thicker

C

are relaxed and lens becomes thicker

D

contract and lens becomes thinner

Text Solution

Verified by Experts

The correct Answer is:
A
are relaxed and lens becomes thinner
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ZEN PUBLICATION-THE HUMAN EYE AND THE COLOURFUL WORLD-ZEN ADDITIONAL QUESTIONS SECTION (MULTIPLE - CHOICE QUESTIONS)
  1. What is Tyndall effect ?

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

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  3. The focal length of the eye lens increases when eye muscles

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  4. Which of the following statements is correct ?

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  5. The change that occurs in the eye to see the distant object clearly is

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  6. Light enters of the eye through a thin, transparent membrane known as

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  7. Human eye can be compared to

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  8. The type of lens present in the human eye is

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  9. The image formed by retina of human eye is

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  10. The phenomenon of light responsible for the working of the human eye i...

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  11. Which part of the eye works like a photographic plate of a camera ?

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  12. In normal human eye, the image is formed

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  13. The fluid between the retina and the eye lens is called

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  14. Which vision defect causes the eye lens to become milky and cloudy ?

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  15. The defect of vision which occurs due to excessive curvature of the ey...

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  16. The defect of vision arises when the focal length of the eye is too lo...

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  17. Which part of the human eye is mainly donated after death ?

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  18. The scientist who first demonstrated that sunlight is composed of seve...

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  19. After tracing the path of a ray of light through a glass prism, a stud...

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  20. In the following ray diagra m the correctly marked angles are :

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