Distance between a compression and adjoining rarefaction in a pressure wave is

Distance between a compression and adjoining rarefaction in a pressure wave is
  1. $\lambda$
  2. $\frac{\lambda}{2}$
  3. $\frac{\lambda}{4}$
  4. $\frac{\lambda}{3}$

Solution

Distance between a compression and adjoining rarefaction in a pressure wave is $\frac{\lambda}{2}$.

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