Advertisements
Advertisements
Question
How is sound perceived by us?
Advertisements
Solution
Sound requires a material medium for its propagation. It is produced when a body vibrates. The vibrations produced at a point are transmitted in the medium (air) from one point to the next and so on in the form of mechanical waves which produce compressions and rarefactions in air. These compressions and rarefactions produce vibrations in the eardrum which are perceived by us as sound.
APPEARS IN
RELATED QUESTIONS
Fill in the blank.
The number of times a body vibrates in one second is called its ______.
What is sound ?
How is it possible to recognize a person by his voice without seeing him?
Name the two types of waves which can be generates in a long flexible spring (or slinky).
How does the velocity of a wave vary with temperature?
In fig. 2 two musical notes of the same pitch and same loudness are played on a violin and on a piano. Their wave forms are as shown in the diagram below. Explain why the wave patterns are different.
An observer A fires a gun and another observer B at a distance 1650 m away from A hears its sound. If the speed of sound is 330 m s-1, find the time when B will hear the sound after firing by A.
The sound produced by a thunderstorm is heard 10 s after the lightning is seen. Calculate the approximate distance of the thunder cloud. (Given the speed of sound = 340 m s–1.)
