Lakhmir Singh Solutions Class 9 Physics Solutions for Exercise in Chapter 5 - Sound

Question 70 Exercise

A musical instrument is producing a continuous note. This note cannot be heard by a person having a normal hearing range. This note must then be passing through:

a) water

b) wax

c) vacuum

d) empty vessel


The correct answer is c) vacuum

Connect with us on social media!
2022 © Quality Tutorials Pvt Ltd All rights reserved