Advertisements
Advertisements
प्रश्न
Explain the terms 'compressions' and 'rarefactions' of a wave. What type of waves consist of compressions and rarefactions.
उत्तर
A longitudinal wave consists of successive compression and rarefaction that is formed due to continuous to and fro motion of a vibrating object.
A compression is that part of a longitudinal wave in which the particles of the medium are closer to one another than they normally are, and there is an instantaneous reduction in the volume of the medium. This is the region of high pressure and density.
A rarefaction is that part of a longitudinal wave in which the particles of the medium are farther apart than normal, and there is an instantaneous increase in the volume of the medium. This is a region of low pressure and density.
APPEARS IN
संबंधित प्रश्न
Which wave property determines (a) loudness, (b) pitch?
What type of waves are illustrated by the movement of a rope whose one end is fixed to a pole and the other end is moved up and down?
Define the term amplitude of a wave. Write its S.I. unit.
The speed of sound is more in hydrogen than in nitrogen. Is this statement true? Give a reason for your answer.
A person fires a gun and other boy at a distance hears the sound of the fire 2.5 s after seeing the flash. If the speed of sound in air is 330 ms-1, find the distance between the boys.
Sound travels in the form of ______.
Sound travels in air:
What happens to the speed of sound when it gases from a solid to a gaseous state?
What are the uses of infrasonic sound?
