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प्रश्न
How is sound produced ?
उत्तर
Sound is produced by vibrating bodies.
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संबंधित प्रश्न
What are wavelength, frequency, time period and amplitude of a sound wave?
State the general name of the waves in which the particles of the medium vibrate :
(i) in the same direction as wave.
(ii) at right angles to the direction of wave.
Is pitch same as frequency?
An observer sitting in line of two tanks watches the flashes of two tanks firing at each other at the same time, but he hears the sounds of two shots 2s and 3.5s after seeing the flashes. If distance between the two tanks is 510m, find the speed of sound.
What do you mean by the audible range of frequency?
The distance between one crest and one trough of a sea wave is 4.5 m. If the waves are produced at the rate of 240/min, calculate the time period.
Name the Sound of the Frequency Given Below:
200 Hz
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 |
Mention two cases in which there is no Doppler effect in sound?
