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 in the 1780s to correct both near and far vision. He was tired of constantly switching between two pairs of glasses. Alfred Nobel invented dynamite, Edison the light bulb, and Diesel the diesel engine.

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