Advertisements
Advertisements
प्रश्न
Describe an experiment to show that each source of sound is a vibrating body.
Advertisements
उत्तर
Sound is produced when a body vibrates. In other words, each source of sound is a vibrating body. This can be demonstrated by the following experiment.
Take a ruler. Press its one end on the table with the left hand as shown in figure. Pull down the other end of the ruler with the right hand and then leave it.
You will notice that the ruler vibrates i.e., the ruler moves to and fro and a humming sound is heard.
After some time, the ruler stops vibrating. No sound is then heard.
This shows that humming sound is produced only because of the vibration of the ruler.
APPEARS IN
संबंधित प्रश्न
Explain why you can predict the arrival of a train by placing your ear on the rails without seeing it.
State whether the following statement is true or false :
Sound produced by a vibrating body travels to our ears by the actual movement of air.
If a ringing bicycle bell is held tightly by hand, it stops producing sound. Why?
Give reason for the following :
In most of the cases, we cannot see the vibrations of a sound producing object with our eyes.
Draw the sketches of two waves A and B such that wave A has twice the wavelength and half the amplitude of wave B.
A musical instrument is producing a continuous note. This note cannot be heard by a person having a normal hearing rang. This note must then be passing through.
In the sound wave produced by a vibrating turning fork shown in the diagram, half the wavelength is represented by :
The region in a sound wave, with higher pressure and density, is called ______ and that with low pressure and density is called ______.
Match the following:
| Human larynx | Vibrations of metal arms |
| Loudspeaker | Vibrations in air column |
| Jal-Tarang | Vibrations in vocal cords |
| Tuning fork | Vibrations in strings |
| Sitar | Vibrations of screen |
______ is produced when an object is set to vibrate.
