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Why is the eye lens not perfectly solid ...

Why is the eye lens not perfectly solid ?

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If it becomes solid, its focal length would be fixed. Then, we would not be able to focus the objects lying at different distances on the retina. In short, accommodation of the eye would be reduced to zero.
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KUMAR PRAKASHAN-THE HUMAN EYE AND THE COLOURFUL WORLD-OBJECTIVE QUESTIONS AND ANSWERS (Answer the following questions in very short as directed (Miscellaneous) )
  1. What is the power of a lens that can be used to correct the eye defect...

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  2. Why does the Sun appear white at noon ?

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  3. Why is the eye lens not perfectly solid ?

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  4. What is the focal length of plain goggles ?

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  5. What happens when elasticity of the crystalline lens is reduced to zer...

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  6. Which defect of the eye occurs due to distortion of cornea ?

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  7. How the defect of astigmatism can be corrected ?

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  8. What is colour blindness? How can it be cured?

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  9. In hypermetropia, how does the size of eyeball change ?

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  10. What change occurs in the focal length, when our eye lens becomes thic...

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  11. What are rods and cones ?

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  12. What is cataract ?

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  13. What would have been the colour of the sky, had there been no atmosphe...

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  14. Due to which phenomenon is the colour of water in deep sea blue ?

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  15. What is the cause for presbyopia ?

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  16. Give the relationship between wavelength of light and its angle of dev...

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  17. For which colour has the glass larger refractive index – violet or gre...

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  18. Which part of human eye is also known as 'white of the eye' ?

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  19. Why is blind spot so called ?

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  20. Which liquid is filled in the space between the eye lens and the retin...

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