HARD
9th Tamil Nadu Board
IMPORTANT
Earn 100

Verify experimentally the laws of reflection of sound.

Important Questions on Sound

EASY
9th Tamil Nadu Board
IMPORTANT
Science Standard 9>Chapter 8 - Sound>textbook exercises>Q iv
You and your friend are on the moon. Will you be able to hear any sound produced by your friend? 
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)