Answer:
The same wavelength
Step-by-step explanation:
The two sound waves shown in the diagram has the same wavelength as clearly shown. 
- Wavelength of a wave is the distance between a complete wave cycle. 
- It is the difference between successive train of troughs and crests. 
- In the figure shown the amplitude, vertical displacement of the wave differs. 
- But the wavelength of the waves are the same.