MEDIUM
9th CBSE
IMPORTANT
Earn 100

 What are infrasonic waves?

Important Questions on Sound

EASY
9th CBSE
IMPORTANT
Secondary Physics>Chapter 6 - Sound>TEST YOURSELF>Q 4

What does SONAR stand for?

MEDIUM
9th CBSE
IMPORTANT
Secondary Physics>Chapter 6 - Sound>TEST YOURSELF>Q 5

What are ultrasonic waves? State two applications of these waves.

MEDIUM
9th CBSE
IMPORTANT
Secondary Physics>Chapter 6 - Sound>TEST YOURSELF>Q 6

What is reflection of sound?

EASY
9th CBSE
IMPORTANT
Secondary Physics>Chapter 6 - Sound>TEST YOURSELF>Q 7

What is reverberation?

EASY
9th CBSE
IMPORTANT
Secondary Physics>Chapter 6 - Sound>EXERCISES>Q 1

What is wave motion?

EASY
9th CBSE
IMPORTANT
Secondary Physics>Chapter 6 - Sound>EXERCISES>Q 2

 What is an echo?

EASY
9th CBSE
IMPORTANT
Secondary Physics>Chapter 6 - Sound>EXERCISES>Q 3

What is the audible range of hearing in humans?

EASY
9th CBSE
IMPORTANT
Secondary Physics>Chapter 6 - Sound>EXERCISES>Q 4
Can two astronauts talk on the surface of moon as they do on the surface of the earth?