Physics, asked by mdtahaali, 7 months ago


7. Sounds having frequency more than 20,000 Hz are called
a. sonic sounds
b. ultrasonic sounds
c. infrasonic sounds
d. none of these​

Answers

Answered by Anonymous
1

Answer:

b

ultrasonic sounds

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Answered by Spackle1017
1

Answer:

Ultrasonic sounds

Explanation:

Frequencies above 20,000 Hz are known as ultrasound.

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