Question

The distance between a compression and the immediate next rarefaction of a longitudinal wave is:
($\lambda$ denotes wavelength)

• A. $\frac{\lambda }{4}$
• B. $2\lambda$
• C. $\frac{\lambda }{2}$
• D. $\frac{\lambda }{8}$

Answer 1

The correct option is C $\frac{\lambda }{2}$

The wavelength of a sound wave is defined as the distance between two consecutive compressions or rarefactions. So the distance between immediate compression and rarefaction will be $\frac{\lambda }{2}$.