MEDIUM
7th ICSE
IMPORTANT
Earn 100

What do you mean by reflection of sound ?

Important Questions on Sound

MEDIUM
7th ICSE
IMPORTANT
Concise PHYSICS Middle School 7>Chapter 6 - Sound>TEST YOURSELF>Q 38
State one use of reflection of sound.
MEDIUM
7th ICSE
IMPORTANT
Concise PHYSICS Middle School 7>Chapter 6 - Sound>TEST YOURSELF>Q 39
What is echo ?
HARD
7th ICSE
IMPORTANT
Concise PHYSICS Middle School 7>Chapter 6 - Sound>TEST YOURSELF>Q 40
What minimum distance is required between the source of the sound and the reflecting surface to hear an echo? Give reason.
MEDIUM
7th ICSE
IMPORTANT
Concise PHYSICS Middle School 7>Chapter 6 - Sound>TEST YOURSELF>Q 41
List four substances which are good absorbers of sound.
HARD
7th ICSE
IMPORTANT
Concise PHYSICS Middle School 7>Chapter 6 - Sound>TEST YOURSELF>Q 42
List the measures that you will take when designing a sound-proof room.
HARD
7th ICSE
IMPORTANT
Concise PHYSICS Middle School 7>Chapter 6 - Sound>TEST YOURSELF>Q 1
A boy fires a gun and another boy at a distance of 1020 m hears the sound of firing the gun 3 s after seeing its smoke. Find the speed of sound.
HARD
7th ICSE
IMPORTANT
Concise PHYSICS Middle School 7>Chapter 6 - Sound>TEST YOURSELF>Q 2
A boy on a hill A fires a gun. The other boy on hill B hears the sound after 4 s. If the speed of sound is 330 m/s, find the distance between the two hills.