EASY
9th CBSE
IMPORTANT
Earn 100

What are infrasonic waves?

Important Questions on Sound

EASY
9th CBSE
IMPORTANT
Physics>Chapter 6 - Sound>CLASS ASSIGNMENT 4>Q 5
What are ultrasonic waves?
MEDIUM
9th CBSE
IMPORTANT
Physics>Chapter 6 - Sound>CLASS ASSIGNMENT 4>Q 5
What is ultrasound? Mention some of its technical applications.
MEDIUM
9th CBSE
IMPORTANT
Physics>Chapter 6 - Sound>CLASS ASSIGNMENT 4>Q 6
Why is ultrasound so useful? Describe two major applications of ultrasound.
MEDIUM
9th CBSE
IMPORTANT
Physics>Chapter 6 - Sound>CLASS ASSIGNMENT 4>Q 7
What is SONAR? What are the applications of this technique?
MEDIUM
9th CBSE
IMPORTANT
Physics>Chapter 6 - Sound>CLASS ASSIGNMENT 4>Q 8
How do the bats locate any obstacle during their flight?
MEDIUM
9th CBSE
IMPORTANT
Physics>Chapter 6 - Sound>CLASS ASSIGNMENT 4>Q 9
Our ears are very delicate and fragile organs. Give some suggestions to take their proper care.
MEDIUM
9th CBSE
IMPORTANT
Physics>Chapter 6 - Sound>CLASS ASSIGNMENT 4>Q 10

Explain briefly the stepwise operation of the human ear.

MEDIUM
9th CBSE
IMPORTANT
Physics>Chapter 6 - Sound>CLASS ASSIGNMENT 4>Q 11
Why the ceilings of a concert hall are curved?