Advertisements
Advertisements
प्रश्न
What is the difference between a compression and a rarefaction in a sound wave? Illustrate your answer with a sketch.
Advertisements
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 a momentary reduction in volume of the medium. It is a region of high pressure and high 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 a momentary increase in the volume of the medium. It is a region of low pressure and low density.
APPEARS IN
संबंधित प्रश्न
The frequency of a source of sound is 100 Hz. How many times does it vibrate in a minute?
A musician recognizes the musical instrument by hearing the sound produced by it, even without seeing the instrument. Which characteristic of sound makes this possible ?
A stone is dropped on the surface of water in a pond. Name the type of waves produced.
Give two examples each of longitudinal waves and transverse waves.
Arrange the speeds of sound in gases, solids, and liquids in ascending order.
Select the correct option:
In case of longitudinal waves, the particles of the medium vibrate:
A continuous progressive transverse wave of frequency 8 Hz moves across the surface of a ripple tank
With reference to the frequency, describe the movement of water on the surface
What cause sound? Why do we require a material medium for the transmission of sound?
Draw a curve showing density or pressure variations with respect to distance for a disturbance produced by sound. Mark the position of compression and rarefaction on this curve. Also, define wavelengths and time periods using this curve.
In longitudinal waves, the particle vibrates in a ______ direction of propagation.
