Question text
18 The graph shows, at one instant, the pressure variation along a sound wave. X pressure P Y atmospheric pressure distance Q Which point on the diagram represents a rarefaction and what is the wavelength of the sound wave? rarefaction wavelength A P X B P Y C Q X D Q Y
18 The graph shows, at one instant, the pressure variation along a sound wave.
X
pressure
P
Y
atmospheric
pressure
distance
Q
Which point on the diagram represents a rarefaction and what is the wavelength of the sound
wave?
rarefaction wavelength
A P X
B P Y
C Q X
D Q Y
Select your answer: