Question 502: Waves

Question

Sound waves travel at 350 m/s through a warm air and at 3500 m/s through brass. The wavelength of a 700 Hz acoustic wave as it enters brass from warm air

Accepted Answer

We have, v = n$$\lambda $$
$$ \Rightarrow v \propto \lambda $$  (as n remains constant)
Thus, as v increases 10 times, $$\lambda $$ also increases 10 times.

Answer

decrease by a factor 10

Answer

increase by a factor 20

Answer

increase by a factor 10

Answer

decrease by a factor 20

Waves

Sound waves travel at 350 m/s through a warm air and at 3500 m/s through brass. The wavelength of a 700 Hz acoustic wave as it enters brass from warm air

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