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प्रश्न
Name three animals which can hear ultrasonic vibrations.
एक पंक्ति में उत्तर
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उत्तर
Dogs, bats and dolphins can hear ultrasonic 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 ___________.
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Elephants produce ____________sound.
Name the sound of the frequency given below:
1000 Hz
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1 hertz is equal to
The range of audible frequency for the human ear is
