EASY
9th CBSE
IMPORTANT
Earn 100

How can reverberation in a big hall or auditorium be reduced?

Important Questions on Sound

MEDIUM
9th CBSE
IMPORTANT
Physics For Class 9>Chapter 5 - Sound>Exercise>Q 4
What is the difference between an echo and reverberation?
MEDIUM
9th CBSE
IMPORTANT
Physics For Class 9>Chapter 5 - Sound>Exercise>Q 5
Name three devices which work on the reflection of sound.
MEDIUM
9th CBSE
IMPORTANT
Physics For Class 9>Chapter 5 - Sound>Exercise>Q 6
What is a megaphone? Name the principle on which a megaphone works.
MEDIUM
9th CBSE
IMPORTANT
Physics For Class 9>Chapter 5 - Sound>Exercise>Q 7
Why are the ceilings of concert halls made curved?
MEDIUM
9th CBSE
IMPORTANT
Physics For Class 9>Chapter 5 - Sound>Exercise>Q 8
Give two uses of ultrasound in industry and in hospitals.
MEDIUM
9th CBSE
IMPORTANT
Physics For Class 9>Chapter 5 - Sound>Exercise>Q 9
Explain how the bats use ultrasonic waves to catch the prey.
EASY
9th CBSE
IMPORTANT
Physics For Class 9>Chapter 5 - Sound>Exercise>Q 10
Name the three tiny bones present in the middle part of the ear.
EASY
9th CBSE
IMPORTANT
Physics For Class 9>Chapter 5 - Sound>Exercise>Q 11
What is the function of three tiny bones in the ear?