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प्रश्न
How does sound from a sound producing body travel through air to reach our ears? Illustrate your answer with the help of a labelled diagram.
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उत्तर
When an object vibrates, then the air layers around it start to vibrate in exactly the same way and causes successive compression and rarefaction that carry sound waves from the sound-producing object to our ears.
Example: A tuning fork vibrates and produces sound waves in air. Since the prongs of the tuning fork vibrate, the individual layers of air also start to vibrate, creating successive compression and rarefaction. Sound travels in the form of longitudinal waves in which the back and forth vibrations of the air layers are in the same direction as the movement of sound wave.
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संबंधित प्रश्न
Can sound travel through vacuum?
Name four ways in which sound can be produced.
How is sound produced? Explain with the help of an example.
Figure X shows a trace of a sound wave produced by a particular tuning fork :
(a) On the graph paper given in Figure Y, draw a trace of the sound wave which has a higher frequency than that shown in figure X.
(b) On the graph paper show in Figure Z, draw a trace of the sound wave which has a larger amplitude than that shown in Figure X.
A key of mechanical piano is first struck gently and then struck again but much harder this time. In the second case :
The region in a sound wave, with higher pressure and density, is called ______ and that with low pressure and density is called ______.
The total number of compressions and rarefactions produced per second in a sound wave is 1000. The frequency of the sound wave is __________.
Match the following:
| Human larynx | Vibrations of metal arms |
| Loudspeaker | Vibrations in air column |
| Jal-Tarang | Vibrations in vocal cords |
| Tuning fork | Vibrations in strings |
| Sitar | Vibrations of screen |
Sound is produced by ______.
The vibrations of a simple pendulum are also known as _______.
