Advertisements
Advertisements
Question
What is approximate value of the speed of sound in iron as compared to that in air? Illustrate your answer with a simple experiment.
Advertisements
Solution
Speed of sound in iron is approximately sixteen times the speed of sound in air.
[Speed of sound in iron = 5100 ms-1; Speed of sound in air=332 ms-1]
Experiment: If we put our ears to rails, we can hear the sound of the train through metal. But at the same time, when we stand near by the railway track, we are not able to hear the sound.
This occurs because when we put our ears to rails, the sound travels through iron. But in standing position, sound travels through air, and due to smaller speed of sound in air as compared to iron, we are not able to hear the sound.
APPEARS IN
RELATED QUESTIONS
How are the wave velocity V, frequency f and wavelength λ of a wave related? Derive the relationship.
Describe a simple experiment to determine the speed of sound in air. What approximation is made in the method described by you?
An observer sitting in line of two tanks watches the flashes of two tanks firing at each other at the same time, but he hears the sounds of two shots 2s and 3.5s after seeing the flashes. If distance between the two tanks is 510m, find the speed of sound.
Select the correct option:
A part of longitudinal wave in which particles of the medium are farther away than the normal particles is called :
Explain how the principle of echo is used by
The bat during its flight at night
Explain how the principle of echo is used by
The dolphin to locate small fish as its prey.
