If the phase difference between two points is 120° for

If the phase difference between two points is 120° for a wave with velocity of 360 m/ and frequency 500 Hz, then path difference between the two points is

If v is the wave velocity and f is the frequency, wavelength (?) is given by:

λ =	v
	f

So as per the question,
λ = 360/500 = 0.72
The path difference between two points is given by

	λ	×φ =	0.72	× 120° = 0.24 m = 24 m
	2π		360°