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प्रश्न
What is the general name of the waves consisting of :
(a) compressions and rarefactions?
(b) crests and troughs?
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उत्तर
(a) Longitudinal waves are the general name of compression and rarefaction.
(b) Transverse waves are the general name of crests and troughs.
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संबंधित प्रश्न
Fill in the blank.
Sound is produced when a body ______.
Name two sources of sound.
Can sound travel through (a) iron, and (b) water?
If a ringing bicycle bell is held tightly by hand, it stops producing sound. Why?
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.
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.
Medium is ______ for generation of sound.
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.
