Sound wave having a frequency greater than 20000 Hz is said to be

Sonic boom

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Ultrasonic

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Supersonic

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Infrasonic

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Solution

The correct option is B
Ultrasonic

Any sound whose waves have a frequency greater than 20000Hz is said to be ultrasonic

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Sound wave having a frequency greater than 20000 Hz is said to be

Sound waves whose frequency is greater than 20000 Hz is called ___.

A sound wave is travelling in air at a speed of 343 m/s. The wavelength of the sound wave is 0.1 cm. Find the frequency of the sound wave. Is the sound audible to humans?

Q. Assertion :Ultrasonic waves are longitudinal waves of frequency greater than 20,000 Hz. Reason: The maximum frequency of audible sound waves is 20,000 Hz.

No.	Column 1	Column 2	Column 3
1.	Transverse wave	(a) Particles oscillate parallel to direction of propagation	(i) Waves produced in slinky.
2.	Longitudinal waves.	(b) Particles oscillate perpendicular to direction of propagation	(ii) Frequency less than 20 Hz.
3.	Ultrasound.	(c) Echo formation is heard under particular conditions.	(iii) Waves produced in string
4.	Infrasound	(d) High frequency waves.	(iv) Frequency between 20 Hz and 20000 Hz.
5.	Audible frequency	(e) Low frequency waves	(v) Frequency greater than 20000 Hz.

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Sound wave having a frequency greater than 20000 Hz is said to be

The correct option is B Ultrasonic Any sound whose waves have a frequency greater than 20000Hz is said to be ultrasonic

The correct option is B
Ultrasonic

Any sound whose waves have a frequency greater than 20000Hz is said to be ultrasonic