Question

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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?

#only need verified answer#​

Answer 1

Answer:

Cold deserts have hot summers but extremely cold winters. These deserts are found in high, flat areas, called plateaus, or mountainous areas in temperate regions of the world. ... Like other types of desert, cold deserts get very little rain or snow.

Answer 2

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Thus the focal length of lens required for correcing distant vision is, - 18.2 cm. Minus sign of focal length tells us that it is a concave lens. Thus the focal length of lens required for required for correcting near vision is +66.7 cm Plus sign of focal length tells us that it is a convex lens.