Question
A wave whose amplitude is 0.07 m and frequency is 400 hertz travels in a medium with a velocity of 300 m/s. Determine the displacement equation of oscillation at a distance x metre from the source due to this wave.

None of these



easy
Solution
None of these
The equation of a plane progressive wave moving in the +X direction is given by
Where a is the amplitude, T is the timeperiod and λ is the wavelength. Here a = 0.07 m, n = 400 Hz (s ^{–1}) and wavespeed v = 300 m/s.
Substituting these values of a, T and λ in the above equation, we get
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