Write the audible, infrasonic & ultrasonic frequency range.

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Solution

The frequency which is less than $20 H z$ is called infrasonic frequency. An example of an infrasonic wave is sound produced by an earthquake.
The frequency range between $20 H z t o 20000 H z$ is called audible frequency which can be listenable by humans.
The frequency, which is greater than $20 k H z$ is known as ultrasonic frequency which can only be heard by bats.

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Similar questions

Q. (a) What are infrasonic waves ? Name two animals which produce infrasonic waves.
(b) What are ultrasonic waves ? Name two animals which can produce ultrasonic waves.
(c) The audible range of frequencies of an average human ear is from 20 Hz to 20 kHz. Calculate the corresponding wavelengths. (Speed of sound in air is 344 ms^–1)

In SONAR we use :

(a) ultrasonic waves

(b) infrasonic waves

(d) audible sound waves

Q. Statement I: Infrasonic and ultrasonic sounds are not audible to humans.
Statement II: For human ears, the audible range is 20 Hz to 20,000 Hz.

Sounds having frequencies lower than 20 Hz are called:

What is : periodic time, simple harmonic motion , wave, wave length, amplitude, frequency, wave velocity, audible sound, infrasonic sound, ultrasonic sound, echo and reverberation

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