sound having frequency less than 20 hz are called .
a. supersonic
b. ultrasonic.
c. sonar
d. infrasonic.
Answers
Answered by
3
Answer:
d) Infrasonic
Explanation:
Sound at 20-200 Hz is called low-frequency sound, while for sound below 20 Hz the term infrasound is used.
Answered by
2
Answer:
Ultrasonic has frequency less than 20 hz
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