Question

If two waves each of intensity I having the same frequency but differing by a constant phase angle of 60 ,superimposing at a certain point in space then the intensity of the resultant wave is

Answer 1

Dear student,

$$\begin{gathered} Asbothhaveidenticalintensity \\ Resul\tan tintensity \\ I\text{'}=I+I+\sqrt{2I\times I\cos 60} \\ I\text{'}=2I+\sqrt{2I\times I\times \frac{1}{2}} \\ I\text{'}=2I+I \\ I\text{'}=3I \end{gathered}$$

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