Science, asked by Swastikdas8881, 1 year ago

Sound corresponding to which frequency is ulfrasonic sound ? (A) 30 Hz (B) 300 Hz (C) 3000 Hz (D) 30,000 Hz

GSEB - Class 9 Chapter - 2. Wave Motion and Sound Page 23

Answers

Answered by Ayush22124

0

ultrasonic sound is more than 20,000 Hz , that is (D) 30,000 Hz

Answered by gohan1

0

If the frequency of sound is greater than 20,000 Hz , it is called ultrasonic sound.
So, option (D) 30,000Hz sound is ultrasound

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