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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:
Ultrasound is of frequency ___________.
Complete the following sentence:
Elephants produce ____________sound.
Name the sound of the frequency given below:
10 Hz
Name the sound of the frequency given below:
1000 Hz
What do you understand by the term infrasonic vibrations?
What do you understand by the term sonic vibrations? State the range of sonic vibrations for the human ear.
How do bats locate their prey during a flight?
What are infrasonic and ultrasonic sounds?
Ultrasound has frequency of vibration
