A person wearing a lens of power −5.5 D for correcting his distant vision. For correcting his near vision he wearing a lens of power +1.5 dioptre. What is the focal length of the lens required for correcting (i) distant vision, and (ii) near vision?
Added by Gyi G.
Step 1
Given that the power for correcting distant vision is -5.5 D, we have: F1 = 100 / (-5.5) F1 = -18.18 cm Show more…
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A person needs a lens of power $-5.5$ dioptres for correcting his distant vision. For correcting his near vision he needs a lens of power $+1.5$ dioptre. What is the focal length of the lens required for correcting (i) distant vision, and (ii) near vision?
A person needs a lens of power −5.5 dioptres for correcting his distant vision. For correcting his near vision he needs a lens of power +1.5 dioptre. What is the focal length of the lens required for correcting (i) distant vision, and (ii) near vision?
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A person needs a lens of power -5.5 Dioptre for correcting his distant vision. For correcting his near vision, he needs a lens of power +1.5 Dioptre. What is the focal length of the lens required for correcting 1. distant vision and 2. near vision? How to solve the answer? Please help me.
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