Sound of frequency greater than 20 kHz is known as ………………..

Sound of frequency greater than 20 kHz is known as ………………..

A) infrasonic

B) ultrasonic

C) echo

D) audible range

Monjur Alahi

5 views

2025-01-04 04:42

1 Answers

Salim Ahmed Kawsar

B) ultrasonic

5 views Answered 2023-02-05 15:29

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