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.
Advertisements
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
What is the general name of the waves consisting of :
(a) compressions and rarefactions?
(b) crests and troughs?
If 20 waves are produced per second, What is the frequency is hertz?
If a ringing bicycle bell is held tightly by hand, it stops producing sound. Why?
Which object is vibrating when the following sounds are produced?
(i) The sound of a sitar
(ii) The sound of a tabla
(iii) The sound of a tuning fork
(iv) The buzzing of a bee or mosquito
(v) The sound of a flute
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.
Figure X shows a trace of a sound wave produced by a particular tuning fork :
(a) On the graph paper given in Figure Y, draw a trace of the sound wave which has a higher frequency than that shown in figure X.
(b) On the graph paper show in Figure Z, draw a trace of the sound wave which has a larger amplitude than that shown in Figure X.
Write the answer in your own words.
What is meant by vibration?
The vibrations of a simple pendulum are also known as _______.
Describe an experiment to show that sound cannot travel through vaccum.
______ is produced when an object is set to vibrate.
