Advertisements
Advertisements
प्रश्न
How does the sound produced by a vibrating object in a medium reach your ear?
उत्तर
When an object vibrates, it also sets the particles of the medium around it vibrate. These particles do not travel all the way from the vibrating object and reach our ears; rather, the particles of the medium in contact with the vibrating object get displaced from their equilibrium position, which exerts a force on the adjacent particle and displaces it as well, and the initial particles return to their original position. This process continues in the medium until the sound reaches our ears. The disturbance created by a source of sound in the medium travels through the medium and not the particles of the medium.
APPEARS IN
संबंधित प्रश्न
Explain how sound is produced by your school bell.
How does a musician playing on a flute change the pitch of sound produced by it ?
What minimum distance is required between the source of sound and the reflecting surface to hear an echo ? Give reason.
What is the name of the strings which vibrate in our voice box when we talk?
What conclusion can be obtained from the observation that when the prongs of a sound making tuning fork touch the surface of water in a beaker, the water gets splashed?
If 20 waves are produced per second, What is the frequency is hertz?
Give reason for the following :
In most of the cases, we cannot see the vibrations of a sound producing object with our eyes.
Fill in the blank with suitable word.
When the frequency of the sound is increased, the wavelength ____________.
A sound producing body is at considerable distance from a man. There can be four different media W, X, Y and Z between the sound producing body and the man. The medium X brings the sound to man most quickly whereas medium Z takes the maximum time. The time taken by medium W in bringing sound to man is less than that of X but more than that of Z. The medium Y, however, fails to bring the sound from the sound producing body to the man. Which medium could be the one :
(a) having on fixed shape and no fixed volume?
(b) having a fixed volume but no fixed shape?
(c) having the same composition as that on the moon?
(d) having a fixed shape and a fixed volume?
Describe an experiment to show that sound cannot travel through vaccum.