EASY
9th CBSE
IMPORTANT
Earn 100

Give an example of multiple echoes.

Important Questions on Sound

EASY
9th CBSE
IMPORTANT
Essentials of PHYSICS Class IX>Chapter 5 - Sound>Assignment>Q 18
Sounds of same loudness and pitch but produced by different musical instruments like a violin and flute is distinguishable. Explain why?
EASY
9th CBSE
IMPORTANT
Essentials of PHYSICS Class IX>Chapter 5 - Sound>Assignment>Q 19
What is an echo?
EASY
9th CBSE
IMPORTANT
Essentials of PHYSICS Class IX>Chapter 5 - Sound>Assignment>Q 19
What is the minimum distance between the source of sound and the obstacle for hearing distinct echoes?
EASY
9th CBSE
IMPORTANT
Essentials of PHYSICS Class IX>Chapter 5 - Sound>Assignment>Q 20
What is a stethoscope? What is its use?
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9th CBSE
IMPORTANT
Essentials of PHYSICS Class IX>Chapter 5 - Sound>Assignment>Q 21
Why are the ceilings of concert halls curved?
EASY
9th CBSE
IMPORTANT
Essentials of PHYSICS Class IX>Chapter 5 - Sound>Assignment>Q 22
What do you understand by reverberation?
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9th CBSE
IMPORTANT
Essentials of PHYSICS Class IX>Chapter 5 - Sound>Assignment>Q 22
How can reverberation be reduced?
EASY
9th CBSE
IMPORTANT
Essentials of PHYSICS Class IX>Chapter 5 - Sound>Assignment>Q 23
Mention two applications of echoes.