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Sound — Science STD 9 — Question

Gujarat BoardEnglish MediumSTD 9ScienceSound1 Mark
MCQ
Ultrasonic sound waves are produced by which of the device below$?$
  • A
    Spectrometer
  • ✓
    Sonar
  • C
    Lunar
  • D
    Loud Speaker
✓

Answer

Correct option: B.
Sonar

$SONAR -$ Sound navigation and ranging is a technique, that uses ultrasonic sound waves to navigate and to detect objects on or under the surface of water.

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