Advertisements
Advertisements
प्रश्न
How do we produce sound ?
Advertisements
उत्तर
Our throat has a larynx. The voice is produced in the larynx. Larynx is also called the voice box. It is designed to produce voice. It is a box like structure with walls of tough tissues. Inside two folds of the tissue, there is a gap. They are the vocal cords. When we breathe, the vocal cords become loose and the gap between them increases. When we talk, shout or sing, the cords become tight and hence they vibrate, thus produce sound. Given figure shows the part of the body which vibrates to produce sound.
APPEARS IN
संबंधित प्रश्न
Describe an experiment to show the production of sound having low and high pitch.
Is pitch same as frequency?
What causes sound?
Define the term wave velocity. Write its S.I. unit.
The sound of an explosion on the surface of a lake is heard by a boat man 100 m away and by a diver 100 m below the point of explosion.
(i) Who would hear the sound first: boatman or diver?
(ii) Give a reason for your answer in part (i).
(iii) If sound takes time t to reach the boatman, how much time approximately does it take to reach the diver?
Select the correct option:
In case of longitudinal waves, the particles of the medium vibrate:
Draw a displacement-time graph for water wave.
The amplitude of the sound wave decides its
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 |
Sound travels in the air as ______ wave.
