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प्रश्न
Write the answer in your own words.
What is meant by vibration?
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उत्तर
The rapid oscillations or to-and-fro movements of an object are called vibrations. Vibrating objects have a particular speed.
संबंधित प्रश्न
A person is listening to a tone of 500 Hz sitting at a distance of 450 m from the source of the sound. What is the time interval between successive compressions from the source?
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 four ways in which sound can be produced.
Give reason for the following :
In most of the cases, we cannot see the vibrations of a sound producing object with our eyes.
How is sound produced? Explain with the help of an example.
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?
Which kind of sound is produced in an earthquake before the main shock wave begins ?
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 |
Describe an experiment to show that sound cannot travel through vaccum.
