The given graph (Fig.12.2) shows the displacement versus time relation for a disturbance travelling with velocity of 1500 ms–1. Calculate the wavelength of the disturbance.
Ans. From the graph
Time period, T = 2 � 10-6 s.
Frequency, v = 1/T = 5 � 105 Hz.
Wavelength, λ υ / v = 5 � 105 m .
