Three harmonic waves having equal frequency … and same intensity …, have phase angles 0, … and … respectively. When they are superimposed the intensity of the resultant wave is close to :

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JEE Main 2020 · 9 Jan, Morning shift · Q8550

PhysicsMedium85×since 2002Q8550

Three harmonic waves having equal frequency

\nu

and same intensity

{I_0}

, have phase angles 0,

{\pi \over 4}

and

- {\pi \over 4}

respectively. When they are superimposed the intensity of the resultant wave is close to :