Advertisements
Advertisements
प्रश्न
How does sound from a sound producing body travel through air to reach our ears? Illustrate your answer with the help of a labelled diagram.
उत्तर
When an object vibrates, then the air layers around it start to vibrate in exactly the same way and causes successive compression and rarefaction that carry sound waves from the sound-producing object to our ears.
Example: A tuning fork vibrates and produces sound waves in air. Since the prongs of the tuning fork vibrate, the individual layers of air also start to vibrate, creating successive compression and rarefaction. Sound travels in the form of longitudinal waves in which the back and forth vibrations of the air layers are in the same direction as the movement of sound wave.
APPEARS IN
संबंधित प्रश्न
How does a musician playing on a flute change the pitch of sound produced by it ?
Name the physical qantity whose SI unit is 'hertz'.
What is the general name of the waves consisting of :
(a) compressions and rarefactions?
(b) crests and troughs?
What conclusion can be obtained from the observation that when the prongs of a sound making tuning fork touch the surface of water in a beaker, the water gets splashed?
Describe a simple experiment to show that the prongs of a sound producing tuning fork are vibrating.
A device called oscillator is used to send waves along a stretched string. The string is 20 cm long, and four complete waves fit along its length when the oscillator vibrates 30 times per second. For the waves on the strings.
(a) what is their wavelength?
(b) what is their frequency
(c) what is their speed?
Which of the following vibrates when a musical note is produced by the cymbals in an orchestra?
Which kind of sound is produced in an earthquake before the main shock wave begins ?
Sound is produced by ______.
The substance through which sound is transmitted is called ______.
