Advertisements
Advertisements
Question
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.
Solution
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.
APPEARS IN
RELATED QUESTIONS
How does a musician playing on a flute change the pitch of sound produced by it ?
What is the SI unit of frequency?
What should an object do to produce sound?
What is the name of the strings which vibrate in our voice box when we talk?
Name the device which is used to produce sound in laboratory experiments?
What will be the change in the wavelength of a sound wave in air if its frequency is doubled?
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 |
______ is produced when an object is set to vibrate.
