EASY
9th CBSE
IMPORTANT
Earn 100

Explain the working of a megaphone.

Important Questions on Sound

MEDIUM
9th CBSE
IMPORTANT
LIVING SCIENCE PHYSICS 9>Chapter 6 - Sound>Check Your Progress>Q 5
Explain how a sound board works.
MEDIUM
9th CBSE
IMPORTANT
LIVING SCIENCE PHYSICS 9>Chapter 6 - Sound>Check Your Progress>Q 6
What are the measures taken to reduce reverberation?
MEDIUM
9th CBSE
IMPORTANT
LIVING SCIENCE PHYSICS 9>Chapter 6 - Sound>Check Your Progress>Q 7
What are the various factors affecting the speed of sound? Explain any three in detail.
MEDIUM
9th CBSE
IMPORTANT
LIVING SCIENCE PHYSICS 9>Chapter 6 - Sound>Check Your Progress>Q 8
What is meant by a sonic boom? What are its harmful effects?
MEDIUM
9th CBSE
IMPORTANT
LIVING SCIENCE PHYSICS 9>Chapter 6 - Sound>Check Your Progress>Q 9
Describe an experiment to verify the laws of reflection of sound.
MEDIUM
9th CBSE
IMPORTANT
LIVING SCIENCE PHYSICS 9>Chapter 6 - Sound>Check Your Progress>Q 10
What is meant by an echo? How is it heard? Explain the various conditions necessary for the formation of echoes.
EASY
9th CBSE
IMPORTANT
LIVING SCIENCE PHYSICS 9>Chapter 6 - Sound>Check Your Progress>Q 11

Give reason: The speed of sound is affected by the direction of wind.

MEDIUM
9th CBSE
IMPORTANT
LIVING SCIENCE PHYSICS 9>Chapter 6 - Sound>Check Your Progress>Q 11
Give reason: Sound travels faster on a rainy day than on a dry day.