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(D) Interference is a phenomenon that occurs when two or more coherent waves superpose. Coherent waves are waves that have the same frequency and a co

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None of these

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(D) Interference is a phenomenon that occurs when two or more coherent waves superpose. Coherent waves are waves that have the same frequency and a constant phase difference over time. In this problem,the waves are stated to be 'independent'. Independent sources of light emit waves with random phase changes,meaning they are incoherent. Therefore,interference cannot be observed between independent sources. Thus,none of the given pairs represent the phenomenon of interference.

Four independent waves are represented by the following equations. Which of these equations represent the phenomenon of interference?
$Y_1 = a_1 \sin \omega t$
$Y_2 = a_2 \sin \omega t$
$Y_3 = a_3 \cos \omega t$
$Y_4 = a_4 \sin (\omega t + \frac{\pi}{3})$

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Four independent waves are represented by the following equations. Which of these equations represent the phenomenon of interference?$Y_1 = a_1 \sin \omega t$$Y_2 = a_2 \sin \omega t$$Y_3 = a_3 \cos \omega t$$Y_4 = a_4 \sin (\omega t + \frac{\pi}{3})$