Physics
How do the following factors affect, if at all, the speed of sound in air —
(i) frequency of sound
(ii) temperature of air
(iii) pressure of air
(iv) moisture in air?
Sound Waves Propagation
75 Likes
Answer
(i) Frequency of sound — The speed of sound does not depend on the frequency (or wavelength) of sound wave. Hence, there is no effect on sound when the frequency of sound changes.
(ii) Temperature of air — The speed of sound in a gas increases with an increase in the temperature of the gas.
(iii) Pressure of air — The speed of sound in a gas is independent of pressure. Hence, there is no effect on sound when the pressure of air is changed.
(iv) Moisture in air — The speed of sound in air increases with an increase in the moisture level of air.
Answered By
46 Likes
Related Questions
Describe an experiment to show that in wave motion, only energy is transferred, but particles of medium do not leave their positions.
Describe in brief, with the aid of a labelled diagram, an experiment to demonstrate that a material medium is necessary for the propagation of sound.
Describe a simple experiment to determine the speed of sound in air. What approximation is made in the method described by you?
How are the wave velocity V, frequency f and wavelength λ of a wave related? Derive the relationship.