Updated By SaraNextGen
On January 25, 2024, 11:35 AM

Page No 170: - Chapter 12 Sound class 9 ncert solutions Science - SaraNextGen [2024]

Question 1:

What is the audible range of the average human ear?


The audible range of an average human ear lies between 20 Hz to 20,000 Hz. Humans cannot hear sounds having frequency less than 20 Hz and greater than 20,000 Hz.



Question 2:

What is the range of frequencies associated with

(a) Infrasound?

(b) Ultrasound?


(a) Infrasound has frequencies less than 20 Hz.

(b) Ultrasound has frequencies more than 20,000 Hz.

Also Read : Page-No-172:-Chapter-12-Sound-class-9-ncert-solutions-Science