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Who among the followings invented bifocal spectacles and lightning rod?

Who among the followings invented bifocal spectacles and lightning rod?

  • (a) Galileo
  • (b) Benjamin Franklin
  • (c) Thomas Edison
  • (d) James Medison
  • Benjamin Franklin has two notable inventions to his credit: bifocal lenses and lightning rods.
  • Lightning Rod (circa 1750): Benjamin Franklin invented the lightning rod to protect structures from fires, inspired by his experimentation with electricity and his famous kite experiment.
  • Bifocals (circa 1784): Benjamin Franklin was tired of switching between two pairs of glasses to correct both nearsightedness and farsightedness. So, he cut two pairs of lenses and combined them into one.
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Related MCQs:

 ‘NATO’ is an abbreviation of:

March 18, 2026 No Comments
  • (A) North Atlantic Treaty Organization
  • (B) Non-Aligned Treaty Organization
  • (C) Non-Aligned Trading Organization
  • (D) North American Transport Organization

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