“A sound wave with frequency higher than 20 kHz is not audible for human ear”. Answer the following in respect of this statement :
Q. “A sound wave with frequency higher than 20 kHz is not audible for human ear”. Answer the following in respect of this statement :
(i) What is the term used for such a sound?
(ii) Name two organisms producing sound in this range.
(iii) Write an application of such a wave.
Ans. (i) Ultrasound.
(ii) Dolphins, bats.
(iii) Ultrasound scanning.
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