Describe with the help of a diagram, how compressions and rarefactions are produced in air near a source of sound.
An echo is heard in 3 s. What is
the distance of the reflecting
surface from the source, given that
the speed of sound is 342 m s–1?
In which of the three media, air,
water or iron, does sound travel
the fastest at a particular
temperature?
A person is listening to a tone of
500 Hz sitting at a distance of
450 m from the source of the
sound. What is the time interval
between successive compressions
from the source?
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