Let us take two waves that have the same frequency but have a certain fixed (constant) phase difference between them. Their super position shown below,
Let the two waves are y1 = a1sinωt and y2 = a2sin(ωt+Φ)
where a1,a2 ¾ Individual amplitudes, Φ¾ Phase difference between the waves at an instant when they are meeting a point.
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1. Resultant amplitude: The resultant wave can be written as y = Asin(ωt+θ)
Where A = resultant amplitude
2. Resultant intensity: As we know intensity (Amplitude)2 and (k is a proportionality constant).
Resultant intensity
For two identical source
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