Advertisements
Advertisements
Question
Describe with diagram, how compressions and rarefactions are produced.
Advertisements
Solution
Sound is also a longitudinal wave. Sound can travel only when there are particles which can be compressed and rarefied. Compressions are the regions where particles are crowded together. Rarefactions are the regions of low pressure where particles are spread apart. A sound wave is an example of a longitudinal mechanical wave. Below figure represents the longitudinal nature of sound wave in the medium.
APPEARS IN
RELATED QUESTIONS
Calculate the wavelength of a sound wave whose frequency is 220 Hz and speed is 440 m/s in a given medium.
Fill in the blank.
We can hear sounds of frequency in the range of _______
List four substances which are good absorbers of sound.
Draw a graph between displacement from mean position and time for a body executing free vibrations in vacuum.
What is the vacuum? Explain why, sound cannot travel through vacuum?
Are sound waves longitudinal or transverse?
In an experiment, Anhad studies sound waves. He sets up a loudspeaker to produce sound as shown below :
Anhad adjusts the signal to the loudspeaker to give a sound of frequency 200 Hz.
(a) What happens to the air in-between Anhad and the loudspeaker ?
(b) Explain how Anhad receives sound in both ears.
Which of the following frequency of sound can be generated by a vibrating simple pendulum as well as by the vibrating vocal cords of a rhinoceros ?
How is the sound produced?
Draw a displacement-time graph for water wave.
