a person needs a lens of power +2.5D for correcting his vision. name the defect of vision he is suffering from which type of lens will be using for the correcting the defect also find the focal length of lens
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If a person needs a lens of power +2.5D , the he is suffering from Hypermetropia .
The person should use convex lens to correct the vision .
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The person should use convex lens to correct the vision .
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ampilyrajusonu:
I want focal length
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