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प्रश्न
What are ultrasonic?
एक पंक्ति में उत्तर
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उत्तर
Ultrasonic are sounds having frequency higher that 20 KHz and not audible to the human being.
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संबंधित प्रश्न
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:
100 Hz
State the approximate speed of ultrasound in air.
A man can hear the sound of frequency :
How do bats locate their prey during a flight?
State four practical uses of ultrasonic vibrations.
What are hearing aids?
Ultrasound has frequency of vibration
The range of audible frequency for the human ear is
