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A person needs a lens of power -5.5 Dioptre for correction his distant vision. For correcting his near visions he need a lens of power +1.5 Dioptre. What is the focal length of the lens required for correcting 1, distant vision and 2, Near visionHow to solve the answer . pls help me

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ANSWER:

SORRY but

who are you

it's OKAY for POINT



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