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प्रश्न
What do you understand by the term infrasonic vibrations?
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उत्तर
Infrasonic vibrations: Those vibrations whose frequency is less than 20 hertz are known as infrasonic vibrations
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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 ___________.
Name the sound of the frequency given below:
10 Hz
Name the sound of the frequency given below:
1000 Hz
Name the sound of the frequency given below:
40 kHz
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