Three harmonic waves having equal frequency and same intensity \( \mathrm{l}_{0} \), have phase angles \( 0, \frac{\pi}{4} \) and \( -\frac{\pi}{4} \) respectively. When they are superimposed the intensity of the resultant wave is close to:

[JEE Main 2019, 10 Jan (Shift 2)]

Question

Three harmonic waves having equal frequency and same intensity \( \mathrm{l}_{0} \), have phase angles \( 0, \frac{\pi}{4} \) and \( -\frac{\pi}{4} \) respectively. When they are superimposed the intensity of the resultant wave is close to:

[JEE Main 2019, 10 Jan (Shift 2)]

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