Advertisements
Advertisements
Question
In which medium sound travels fastest : air, water or steel?
Advertisements
Solution
Sound travels faster in steel than in water. Similarly, sound travels faster in water than in air. This is because in solids, the distances between the molecules are closer and thus the atoms are more densely packed than in gases and liquids. Therefore, the molecules quickly collide with one another and transfer the vibrational energy. Similarly, in liquids the molecules are closer to one another than in gases.
APPEARS IN
RELATED QUESTIONS
Can two person hear each other on moon’s surface ? Give reason to support your answer.
Name one solid, on liquid and one gas through which sound can travel.
Which of the following terms apply to sound waves in air and which to water waves?
Transverse, Rarefaction, Trough, Crest, Compression, Longitudinal
An electric bell is suspended by thin wires in a glass vessel and set ringing. Describe and explain what happens if the air is gradually pumped out of the glass vessel.
Why cannot a sound be heard on the moon? How do astronauts talk to one another on the surface of moon?
Give scientific reasons:
As the sound wave propagates from one place to the other in air, the air itself is not required to move from one place to the other.
The time interval between a lightning flash and the first sound of thunder was found to be 5 s. If the speed of sound in air is 330 m s-1, find the distance of flash from the observer.
A boy fires a gun and another boy at a distance hears the sound of fire 2.5s after seeing the flash. If the speed of sound in air 340 m/s, find distance between the boys.
What is the approximate value of the speed of sound in air at N.T.P.?
In any medium, as the ______ increases, the speed of sound also increases.
