Advertisements
Advertisements
प्रश्न
Give scientific reasons:
As the sound wave propagates from one place to the other in air, the air itself is not required to move from one place to the other.
उत्तर
A vibrating object disturbs the air particles near it. The air particles get compressed as well as start vibrating and gain energy. These particles, vibrating about their mean position, then transfer their energy to the other layer of particles near to them. In this way, the region of compression and rarefaction are created and hence sound is produced. So, in sound production, only the transfer of energy of the vibrating particles takes place and not the transfer of particles themselves. So, yes we can say that as the sound wave propagates from one place to the other in the air, the air itself is not required to move from one place to the other.
संबंधित प्रश्न
Select the correct alternative :
Sound cannot travel in
Out of solids, liquids and gases :
(a) in which medium sound travels slowest?
(b) in which medium sound travels fastest?
The frequency of the sound emitted by the loudspeaker is 1020 Hz. Calculate the wavelength of the sound wave in air in cm where its velocity is 340 m/s.
Why cannot a sound be heard on the moon? How do astronauts talk to one another on the surface of moon?
Describe in brief, with the aid of a lebelled diagram, an experiment to demonstrate that a material medium is necessary for propagation of sound.
How does the speed of sound in air vary with temperature?
Sound in air propagates in form of
Write the answer in your own words.
Explain with the help of practical examples how sound is propagated through solids.
The speed of sound is ______ in solids than in liquids
Rarefactions are the regions of ______ where particles are spread apart.
