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The defect of vision which the eye-lens ...

The defect of vision which the eye-lens of a person gets progressively cloudy resulting in blurred vision is called :

A

myopia

B

presbyopia

C

colourblindness

D

cataract

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The correct Answer is:
D
NA
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LAKHMIR SINGH & MANJIT KAUR-THE HUMAN EYE AND THE COLOURFUL WORLD -Exercise
  1. A student sitting on the last bench in the class cannot read be writin...

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  2. A man driving a car can read a distant road sign clearly but finds dif...

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  3. The defect of vision which the eye-lens of a person gets progressively...

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  4. A person cannot see distant objects clearly. His vision can be correct...

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  5. A person finds difficulty in seeing nearby objects clearly. His vision...

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  6. In a certain murder investigation, it was important to discover whethe...

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  7. The near point of a long-sighted person is 50 cm from the eye. (a) C...

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  8. A person can read a book clearly only if he holds it at an arm's lengt...

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  9. How much is our field of view : (a) with one eye open ? (b) with b...

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  10. Fill in the following blanks with suitable words : (a) Having two ey...

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  11. What are the advantages of having two eyes instead of just one ?

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  12. Explain clearly why, a person who has lost the sight of one eye is at ...

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  13. Name two animals having eye : (a) on the sides of the head. (b) at...

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  14. With both eyes open, a person's field of view is about :

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  15. Having two eyes gives a person :

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  16. As light rays pass from air into a glass prism, are they refracted tow...

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  17. As light rays emerge from a glass prism into air, are they refracted t...

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  18. Name a natural phenomenon which is caused by the dispersion of sunligh...

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  19. What information do we get about sunlight from the formation of a rain...

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  20. What did Newton demonstrate by his experiments with the perism ?

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