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प्रश्न
Rapid back and forth motion of a particle about its mean position is called _____.
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उत्तर
Rapid back and forth motion of a particle about its mean position is called vibrations.
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संबंधित प्रश्न
On what factor does the loudness of a sound depend ?
'Note' is a sound :
State the speed of (i) light and (ii) sound in air?
Complete the following sentences :
Sound cannot travel through __________, but it requires a ___________.
The speed of light in air is :
How is sound perceived by us?
An observer X is on an island 5500 m from a vertical cliff on the shore. A ship Y is anchored between the island and the Cliff. A blast on the ship’s siren is heard twice by X, the interval being 5s. [Velocity of sound = 330 ms−1]
(i) Find the distance of the ship from the island.
(i) Find the distance of the cliff from the ship.
Match the following.
| Ultrasonics | Frequency below 20Hz |
| Speed of sound in air | Needs material medium |
| Infrasonics | 330ms-1 |
| Sound propagation | Frequency more than 20000 Hz |
How does the sound produced by a vibrating object in a medium reach your ears?
In which medium the speed of the sound is maximum?
