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प्रश्न
What do you understand by the term sonic vibrations? State the range of sonic vibrations for the human ear.
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उत्तर
Sonic vibrations: Sonic vibrations are also known as audio vibrations.
Those vibrations whose frequency is from 20 hertz to 20000 hertz are known as sonic vibrations. The range of sonic vibrations is from 20 vibrations per second to 20000 vibrations per second.
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संबंधित प्रश्न
A microphone is connected to the Y-input of a C.R.O Three different sounds are made in turn in front of the microphone. Their traces (a), (b) and (c) produces on the screen are shown in following figure.
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| (a) | (b) | (c) |
- Which trace is due to the loudest sound? Give reason for your answer.
- Which trace is due for the sound with the lowest pitch? Explain your answer.
Complete the following sentences:
An average person can hear sound of frequencies in the range ______ to _________.
Complete the following sentence:
Infrasonic sound is of frequency ______________.
A man can hear the sound of frequency :
What do you understand by the term ultrasonic vibrations?
What is Galton’s whistle? To what use is it put?
What are ultrasonic? State and explain two applications of ultrasounds.
What are infrasonic and ultrasonic sounds?
What does SONAR stand for? Where do we make use of SONAR?
What are hearing aids?
