For the correction of which of the following optical defects are convex lenses used?

Options :
  1. Astigmatism
  2. Short sightedness
  3. Cataract
  4. Long sightedness
Answer and Explanation :-

Answer: Option 4

Explanation:

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It's been a prevalent notion. Fallen sparks. Fragments of vessels broken at the Creation. And someday, somehow, before the end, a gathering back to home. A messenger from the Kingdom, arriving at the last moment. But I tell you there is no such message, no such home -- only the millions of last moments . . . nothing more. Our history is an aggregate of last moments.
-Thomas Pynchon Gravity's Rainbow