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Short sightedness or myopic vision is c...

Short sightedness or myopic vision is corrected by wearing

A

Convex lenses

B

Concave lenses

C

Convex mirrors

D

Concave mirrors

Text Solution

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The correct Answer is:
B
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Short sightedness in humans can be corrected by using

Complete the following sentences : (a) A short-sighted person cannot see……….. objects clearly. Short-sightedness can be corrected by using………….lenses. (b) A long-sighted person cannot see……….. objects clearly. Long-sightedness can be corrected by using...........lenses.

(a) What is short-sightedness ? State the two causes of short-sightedness (or myopia). With the help of ray diagram, show : (i) the eye-defect short-sightedness. (ii) correction of short-sightedness by using a lens. (b) A person having short-sight cannot see objects clearly beyond a distance of 1.5 m. What would be the nature and power of the corrective lens to restore proper vision ?

Does short sightedness (myopia) or long sightedness (hypermetropia) imply necessarily that the eye has partially lost its ability of accomodation ? If not, what might cause these defects of vision ?

Name any two defects of vision which can be corrected by using spectacles.

AAKASH INSTITUTE-NEURAL CONTROL AND COORDINATION -Assignment SECTION - B (Objective Type Questions )
  1. The branched trr like structure present in cerebellum is or The tr...

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  2. The vomiting centre is situated in

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  3. End of spinal cord is

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  4. Paralysis of jaw muscles is due to loss of function of which cranial n...

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  5. Which of the following cranial nerves in man is both sensory and motor...

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  6. Which of the following cranial nerves are linked with taste buds ?

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  7. The smallest cranial nerve in human being is

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  8. The fourth cranial nerve of man is

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  9. The number of spinal nerves in man is

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  10. The corpuscles lying deep in dermis and responsible for deep pressure ...

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  11. When the object is at a distance of more than 6 metres, at that time

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  12. In old age, the vision of eye becomes dim. It is due to

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  13. In hypermetropia, the image is formed

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  14. In presbyopia

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  15. In myopia, light rays from far off objects converge

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  16. Overproduction of aqueous humour results in

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  17. Short sightedness or myopic vision is corrected by wearing

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  18. A molecule cannot be tasted or smelled until it has been

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  19. The activity of which cranial nerve can protect us by warning about ha...

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  20. Total number of taste buds in the human tongue is approximately

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