Question

3 diifferencr between ultrasonic and infra sonic

Answer 1

☆Ultrasonic means sound with frequencies more than 20 KHz. Infrasonic means sound with frequencies less than 20 Hz.

☆Ultrasonic sounds have a frequency above the upper limit of human hearing. The infrasonic sounds have below the lower limit of human hearing. 

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Answer 2

The sounds of frequency less than 20Hz are called infrasonics. The infrasonic sounds have below the lower limit of human hearing. The sound of frequency more than 20,000Hz are called ultrasonics. ultrasonic sounds have a frequency above the upper limit of human hearing.