Multiple choice general knowledge

Instrument for reproducing sound

  1. Plantimeter

  2. Phonograph

  3. Hygrometer

  4. Radar

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

A phonograph is an instrument for reproducing sound, invented by Thomas Edison. It records and reproduces sound using a vibrating needle etching grooves on a rotating cylinder or disc. Plantimeter measures area, hygrometer measures humidity, and radar detects objects using radio waves.