Question

The given graph (Fig.12.2) shows the displacement versus time relation for a disturbance travelling with a velocity of 1500 ms^–1. Calculate the wavelength of the disturbance.

Answer 1

From the given graph,

The time period of the disturbance,

T = 2 µ s = 2 × 10⁻⁶s

Velocity of disturbance, v = 1500 ms_l So, wavelength of the disturbance,

λ = vT

= 1500 m s⁻¹ × 2 × 10⁻⁶ s

= 3 × 10⁻³ m