EASY
9th CBSE
IMPORTANT
Earn 100

What is persistence of hearing?

Important Questions on Sound

EASY
9th CBSE
IMPORTANT
Physics For Class 9>Chapter 5 - Sound>Exercise>Q 4
What is the minimum distance of the obstacle from the source of sound for hearing distinct echo?
EASY
9th CBSE
IMPORTANT
Physics For Class 9>Chapter 5 - Sound>Exercise>Q 5
Sound made in front of a tall building 18 m away is repeated. Name the phenomenon and briefly explain it.
EASY
9th CBSE
IMPORTANT
Physics For Class 9>Chapter 5 - Sound>Exercise>Q 6
What is reverberation?
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9th CBSE
IMPORTANT
Physics For Class 9>Chapter 5 - Sound>Exercise>Q 7
Is the large amount of reverberation in a big hall or auditorium desirable?
EASY
9th CBSE
IMPORTANT
Physics For Class 9>Chapter 5 - Sound>Exercise>Q 8
Name the device used by doctors to listen our heartbeats.
EASY
9th CBSE
IMPORTANT
Physics For Class 9>Chapter 5 - Sound>Exercise>Q 9
What is the range of hearing in human beings?
EASY
9th CBSE
IMPORTANT
Physics For Class 9>Chapter 5 - Sound>Exercise>Q 10
What are infrasonic sounds?
EASY
9th CBSE
IMPORTANT
Physics For Class 9>Chapter 5 - Sound>Exercise>Q 11
What are ultrasonic sounds?