Multiple choice general knowledge

Who invented Bifocal Lens?

  1. Alfred B. Nobel

  2. Thomas Alva Edison

  3. Benjamin Franklin

  4. Rudolf Diesel
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Benjamin Franklin invented bifocal lenses around 1760 to correct both near and far vision. The genius was combining two lens types in one frame. The other inventors listed worked in different fields: Nobel in explosives, Edison in electricity, Diesel in engines.

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