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प्रश्न
The region in a sound wave, with higher pressure and density, is called ______ and that with low pressure and density is called ______.
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उत्तर
The region in a sound wave, with higher pressure and density, is called compression and that with low pressure and density is called rarefaction.
संबंधित प्रश्न
Describe an experiment to show that each source of sound is a vibrating body.
What minimum distance is required between the source of sound and the reflecting surface to hear an echo ? Give reason.
The frequency of a source of sound is 100 Hz. How many times does it vibrate in a minute?
Can sound travel through vacuum?
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?
A musical instrument is producing a continuous note. This note cannot be heard by a person having a normal hearing rang. This note must then be passing through.
In the sound wave produced by a vibrating turning fork shown in the diagram, half the wavelength is represented by :
When the pitch of note produced by a harmonium is lowered, then the wavelength of the note :
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.
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 |
