Check sibling questions

Question 2 Page 170 - Chapter 12 Class 9 - Sound (Deleted)

Last updated at June 26, 2019 by

What is the range of frequencies associated with

(a) Infra-sound?

(b) Ultrasound?

 

Answer 

(a) Infra-sounds have frequencies less than 20 Hz.

(b) Ultrasounds have frequencies more than 20,000 Hz.

CA Maninder Singh's photo - Expert in Practical Accounts, Taxation and Efiling

Made by

CA Maninder Singh

CA Maninder Singh is a Chartered Accountant for the past 12 years and a teacher from the past 16 years. He teaches Science, Accounts and English at Teachoo