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The defect of vision which cannot be cor...

The defect of vision which cannot be corrected by using spectacles is :

A

myopia

B

presbyopia

C

cataract

D

hypermetropia

Text Solution

Verified by Experts

The correct Answer is:
C
NA
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Which defect of vision can be rectified : (a) by using a concave lens ? (b) by using a convex lens ?

LAKHMIR SINGH & MANJIT KAUR-THE HUMAN EYE AND THE COLOURFUL WORLD -Exercise
  1. Fill in the following blanks with suitable words : A person is short...

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  2. The human eye can focus objects at different distances by adjusting th...

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  3. The defect of vision which cannot be corrected by using spectacles is ...

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  4. A person cannot see the distant objects clearly (though he can see the...

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  5. Though a woman can see the distant objects clearly, she cannot see the...

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  6. A young man has to hold a book at arm's length to be able to read it c...

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  7. After testing the eye of a child, the optician has prescribed the foll...

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  8. A student sitting on the last bench in the class cannot read be writin...

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

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

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

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

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

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

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

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

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

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

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

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

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