Answer the following in brief:
A person standing close to a loudspeaker hears a sound more strongly than a person standing farther away.
a) What happens to the intensity of sound as the distance from the source increases?
b) Why does the intensity decrease?
c) Does this necessarily mean that the frequency of the sound has decreased? Give a reason.
a) What happens to the intensity of sound as the distance from the source increases?
b) Why does the intensity decrease?
c) Does this necessarily mean that the frequency of the sound has decreased? Give a reason.
a) The intensity of sound generally as the distance from the source increases.
b) As sound travels away from the source, its energy spreads over a . Therefore, passes through a unit area.
c) . A decrease in intensity does not necessarily mean a decrease in frequency because .