Advertisements
Advertisements
प्रश्न
What is sonar ? Explain its use.
Advertisements
उत्तर
SONAR is an acronym for Sound Navigation And Ranging. Sonar is an apparatus that is used to find the depth of a sea or to locate the underwater things like shoals of fish, shipwrecks, and enemy submarines.
APPEARS IN
संबंधित प्रश्न
Explain the working and application of a sonar.
Fill in the blank with suitable word .
Sound waves are caused by ...................
Name the three characteristics of sound.
Name the characteristic of sound which can distinguish between the 'notes' (musical sounds) played on a flute and a sitar (both the notes having the same pitch and loudness).
What name is given to sound waves of frequencies higher than 20 kHz ?
Draw labelled diagrams to represent (a) soft sound, and (b) loud sound, of the same frequency.
Draw labelled diagrams to represent sound of (a) low pitch, and (b) high pitch, of the same loudness.
How is it that bats are able to fly at night without colliding with other objects ?
Define the following terms : (a) Echolocation (b) Echocardiography, and (c) Ultrasonography.
What type of waves are generated by SONAR device fixed to a fishing ship ?
