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प्रश्न
Complete the following sentence:
Bats can produce and hear ___________ sound.
रिकाम्या जागा भरा
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उत्तर
Bats can produce and hear ultrasonic sound.
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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:
1000 Hz
Name the sound of the frequency given below:
40 kHz
State the approximate speed of ultrasound in air.
State two applications of ultrasound.
The sonic boom of an aircraft has a time period of 0.00005s. Calculate the frequency of sound produced.
State the main components of a hearing aid.
Ultrasound has frequency of vibration
The range of audible frequency for the human ear is
