The figure represents a longitudinal wave travelling in positive x-direction. Then

Engineering

Physics

Displacement and Pressure Wave Equation of Sound

Prograssive Wave Equation

Reflection Refraction and Superposition of Wave

Question

The figure represents a longitudinal wave travelling in positive x-direction. Then

part CDE represents region of compression

part ABC represents region of rarefaction

part CDE represents region of rarefaction

part ABC represents region of compression

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$dp = - β \frac{dy}{dx} \Rightarrow ABC$ has negative slope hence, represent compression, while CDE has positive slope hence, represents rarefaction