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What is presbyopia ? State the reason for this defect . How is presbyopia corrected?

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NAVNEET PUBLICATION-LENSES-EXERCISE
  1. Answer the following questions : Given below is a diagram showing a d...

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  2. Answer the following questions : Given below is a diagram showing a d...

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  3. Answer the following questions : What is presbyopia ? State the reaso...

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  4. Answer the following questions : What is a bifocal lens ?

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  5. Answer the following questions : Anil cannot see the blackboard writi...

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  6. Answer the following questions : Anil cannot see the blackboard writi...

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  7. Answer the following questions : Anil uncle cannot see nearby objects...

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  8. Answer the following questions : Anil uncle cannot see nearby objects...

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  9. Answer the following questions : When are bifocal lenses used in spec...

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  10. Answer the following questions : Aniket from Std. X uses spectacles ....

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  11. Answer the following questions : Aniket from Std. X uses spectacles ....

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  12. Answer the following questions : Aniket from Std. X uses spectacles ....

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  13. Answer the following questions : Sunita from Std. X uses spectacles . ...

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  14. Answer the following questions : Sunita from Std. X uses spectacles . ...

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  15. Answer the following questions : Sunita from Std. X uses spectacles . ...

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  16. Answer the following questions : Surbhi from Std. X uses spectacles . ...

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  17. Answer the following questions : Surbhi from Std. X uses spectacles . ...

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  18. Answer the following questions : Surbhi from Std. X uses spectacles . ...

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  19. Answer the following questions : My grandfather uses a bifocal lens i...

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  20. Answer the following questions : State uses of a concave lens .

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