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प्रश्न
What are mechanical waves?
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उत्तर
The waves which travel in the medium through the vibrations of the medium particles about their mean positions are called mechanical waves.
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संबंधित प्रश्न
Distinguish between the free (or natural) and forced vibrations.
When a troop crosses a suspension bridge, the soldiers are asked to break steps. Explain the reason.
(i) Define resonant vibrations.
(ii) Which characteristic of sound, makes it possible to recognize a person by his voice without seeing him?
Differentiate between the following:
Radio waves and light waves.
On keeping the stem of a vibrating tuning fork on the surface of a table, a loud sound is heard. Give reason.
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(i) What change takes place in the sound to give this idea?
(ii) What causes the change in the sound?
When acoustic resonance takes place, a loud sound is heard. Why does this happen? Explain.
Explain a tuning fork (vibrating) is held close to ear. One hears a faint sound. The same vibrating tuning fork is placed on table, such that its handle is in contact with table, one hears a loud sound.
When the stem of vibrating tuning fork is pressed on a table, the tabletop starts vibrating. These vibrations are definitely an example of ______.
