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A person cannot see distant objects clea...

A person cannot see distant objects clearly. His vision can be corrected by using the spectacles containing :

A

concave lenses

B

plane lenses

C

contact lenses

D

convex lenses

Text Solution

Verified by Experts

The correct Answer is:
A

NA
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LAKHMIR SINGH & MANJIT KAUR-THE HUMAN EYE AND THE COLOURFUL WORLD -Exercise
  1. A man driving a car can read a distant road sign clearly but finds dif...

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

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

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

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

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

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

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

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

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

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

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

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

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  14. Having two eyes gives a person :

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

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

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

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

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

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  20. What colours make up white light ?

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