Question

The linear distance between the compression and the adjacent rarefaction is 0.8 m. The wavelength of the longitudinal wave is

Answer 1

Correct option is B. 1.6 m
Wave length $$\lambda$$ is defined as the distance between two successive compressions or rarefactions , therefore the distance between two successive compression and rarefaction will be $$\lambda/2$$ ,

now given , $$\lambda/2=0.8$$ ,

or $$\lambda=2\times0.8=1.6m$$