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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
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 sentence:
Ultrasound is of frequency ___________.
Explain how do bats locate the obstacles and prey in their way.
Sonar makes use of :
Name three animals which can hear ultrasonic vibrations.
How do bats locate their prey during a flight?
State four practical uses of ultrasonic vibrations.
What are ultrasonic?
What does SONAR stand for?
Does SONAR make use of infrasonic sound?
