EASY
9th CBSE
IMPORTANT
Earn 100

How can reverberation be reduced?

Important Questions on Sound

EASY
9th CBSE
IMPORTANT
Essentials of PHYSICS Class IX>Chapter 5 - Sound>Assignment>Q 23
Mention two applications of echoes.
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9th CBSE
IMPORTANT
Essentials of PHYSICS Class IX>Chapter 5 - Sound>Assignment>Q 24
Why do whales and elephants get disturbed before earthquakes?
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9th CBSE
IMPORTANT
Essentials of PHYSICS Class IX>Chapter 5 - Sound>Assignment>Q 25
What is an ultrasound scanner?
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9th CBSE
IMPORTANT
Essentials of PHYSICS Class IX>Chapter 5 - Sound>Assignment>Q 26
How do our ears permit us to receive the sound?
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9th CBSE
IMPORTANT
Essentials of PHYSICS Class IX>Chapter 5 - Sound>Assignment>Q 27
Draw diagram to represent sound of high pitch.
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9th CBSE
IMPORTANT
Essentials of PHYSICS Class IX>Chapter 5 - Sound>Assignment>Q 27
Draw diagram to represent sound of low pitch of the same loudness.
EASY
9th CBSE
IMPORTANT
Essentials of PHYSICS Class IX>Chapter 5 - Sound>Assignment>Q 28
Echoes cannot be heard in a small room. Explain.
EASY
9th CBSE
IMPORTANT
Essentials of PHYSICS Class IX>Chapter 5 - Sound>Assignment>Q 29
A boy strikes one end of a long iron pipe with a stone. Another boy who keeps his ear close to the other end of the pipe heard two sounds in a short interval of time. Explain why?