Multiple choice general knowledge

Which of the inventions was done by Thomas Alva Edison

  1. Carbon telephone transmitters

  2. Barometer

  3. Telescope

  4. none
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A Correct answer
Explanation

Edison invented the carbon telephone transmitter in 1877, which significantly improved voice transmission clarity in early telephones. The barometer was invented by Evangelista Torricelli in the 17th century, and the telescope was developed by Hans Lippershey.

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