EASY
9th Tamil Nadu Board
IMPORTANT
Earn 100

You and your friend are on the moon. Will you be able to hear any sound produced by your friend? 

Important Questions on Sound

HARD
9th Tamil Nadu Board
IMPORTANT
Science Standard 9>Chapter 8 - Sound>textbook exercises>Q v
Describe with diagram, how compressions and rarefactions are produced.
HARD
9th Tamil Nadu Board
IMPORTANT
Science Standard 9>Chapter 8 - Sound>textbook exercises>Q v
Verify experimentally the laws of reflection of sound.
HARD
9th Tamil Nadu Board
IMPORTANT
Science Standard 9>Chapter 8 - Sound>textbook exercises>Q v
List the applications of sound.
HARD
9th Tamil Nadu Board
IMPORTANT
Science Standard 9>Chapter 8 - Sound>textbook exercises>Q v
Explain how does SONAR work?
MEDIUM
9th Tamil Nadu Board
IMPORTANT
Science Standard 9>Chapter 8 - Sound>textbook exercises>Q vi
The frequency from a source of sound is 600 Hz. Calculate the number of times it vibrates in a minute.
HARD
9th Tamil Nadu Board
IMPORTANT
Science Standard 9>Chapter 8 - Sound>textbook exercises>Q vi
A stone is dropped from the top of a tower 750 m into a pond of water at the base of the tower. Calculate the number of seconds for the flash to be heard? (Given g=10 m s-2 and speed of sound=340 m s-1)