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प्रश्न
State the approximate speed of ultrasound in air.
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उत्तर
The approximate speed of ultrasound in air is 330 m/s-1.
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संबंधित प्रश्न
The sketches I to IV in following Figure show sound waves, all formed in the same time interval.
 |
 |
| I | II |
 |
 |
| III | IV |
Which diagram shows
- a note from a musical instrument
- a soft (or feeble) note,
- a bass (low frequency) note.
Complete the following sentence:
Infrasonic sound is of frequency ______________.
Name the sound of the frequency given below:
10 Hz
Explain how do bats locate the obstacles and prey in their way.
The sonic boom of an aircraft has a time period of 0.00005s. Calculate the frequency of sound produced.
Does SONAR make use of infrasonic sound?
What are infrasonic and ultrasonic sounds?
What does SONAR stand for? Where do we make use of SONAR?
State the main components of a hearing aid.
State the properties of ultrasound that make it useful.
