1.

A person needs a lens of power –5.5 dioptres for correcting his near vision and he needs a lens of power +1.5 dioptre. What is the focal length of the lens required for correcting? (i) distant vision (ii) near vision

Answer»

A person needs a lens of power –5.5 dioptres for correcting his near vision and he needs a lens of power +1.5 dioptre. What is the focal length of the lens required for correcting?

(i) distant vision

(ii) near vision



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