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प्रश्न
What causes sound in air?
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उत्तर
The waves in the air causes sound . Through waves , energy get transferred from one place to another and hence the sound.
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संबंधित प्रश्न
Which characteristics of the sound helps you to identify your friend by his voice while sitting with others in a dark room?
| Column A | Column B |
| (a) Vibrations cause | (1) absorb sound |
| (b) A shriller sound is | (2) second |
| (c) Unit of frequency | (3) sound |
| (d) Unit of time period | (4) of high pitch |
| (e) Curtains | (5) hertz |
Name the two characteristics of sound which differentiate two sounds from each other.
How does the loudness of sound produced depend on the vibrating area of the body ?
In fig. 2 two musical notes of the same pitch and same loudness are played on a violin and on a piano. Their wave forms are as shown in the diagram below. Explain why the wave patterns are different.
What do you mean by the audible range of frequency?
Why is the ceiling and wall behind the stage of good conference halls or concert halls made curved?
