question_answer

In the given figure, a displacement - distance graph for a wave is shown. The wave velocity is 320 m/s. (a) The wavelength of the wave is 0.4 m (b) The frequency of the wave is 800 Hz (c) The amplitude of the wave is 2 cm (d) The frequency of the wave is 400 Hz

Answer:

(a),(c),(d) (a) From graph, \[(\lambda )=0.4m\] (b) Given wave velocity \[(v)=320\text{ }m/s\] We know, \[V=f\lambda \] \[\Rightarrow \] \[f=\frac{v}{\lambda }\] \[=\frac{320}{0.4}=800\,Hz\] (c) from the graph, amplitude A = 2 cm