EASY
9th ICSE
IMPORTANT
Earn 100

A wave vibrates up and down five times in 0.5 s and it covers a distance of 7 m during this interval. Calculate the velocity of the wave.

Important Questions on Sound

MEDIUM
9th ICSE
IMPORTANT
Together With Physics Class 9>Chapter 7 - Sound>Self Evaluation Test>Q 2
The speed of sound through a gas contained in a tube is V. What will be the speed of sound, if the gas in the tube is compressed to double its pressure?
EASY
9th ICSE
IMPORTANT
Together With Physics Class 9>Chapter 7 - Sound>Self Evaluation Test>Q 3
State two properties of a material medium on which the speed of sound depends. 
EASY
9th ICSE
IMPORTANT
Together With Physics Class 9>Chapter 7 - Sound>Self Evaluation Test>Q 4
How does the speed of sound differ in the following media?
Solids, liquids, gases and vacuum.
EASY
9th ICSE
IMPORTANT
Together With Physics Class 9>Chapter 7 - Sound>Self Evaluation Test>Q 5
Describe an experiment to show that the source of sound in air is a vibrating body.
EASY
9th ICSE
IMPORTANT
Together With Physics Class 9>Chapter 7 - Sound>Self Evaluation Test>Q 6
State three differences between the modes of propagation of sound and light waves. 
EASY
9th ICSE
IMPORTANT
Together With Physics Class 9>Chapter 7 - Sound>Self Evaluation Test>Q 7
State three factors which do not affect the speed of sound in a gas.
EASY
9th ICSE
IMPORTANT
Together With Physics Class 9>Chapter 7 - Sound>Self Evaluation Test>Q 8
Explain why It is not possible to talk through open space on the surface of the moon.
EASY
9th ICSE
IMPORTANT
Together With Physics Class 9>Chapter 7 - Sound>Self Evaluation Test>Q 8
Explain why, the flash of lightning reaches earlier than the sound of thunder.