Three harmonic waves having equal frequency ν and same intensity I₀, have phase angles 0, (π)/4 and - (π)/4 respectively. When they are superimposed the intensity of the resultant wave is close to:

Oscillations and Waves: JEE Main 2020 Physics question

JEE Main 2020 · 9 Jan, Morning shift · Q8550

JEE Main 20209 Jan, Morning shiftPhysicsMediumOscillations and Waves185× since 2002

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 :