Two waves with same amplitude and frequency superpose at a point. The ratio of resultant intensities when…
Two waves with same amplitude and frequency superpose at a point. The ratio of
resultant intensities when they arrive in phase to that when they arrive $90^{\circ}$ out of
phase is $\left[\cos \frac{\pi}{2}=0\right]$
$\sqrt{2}: 1$
$2: 1$
$4: 1$
$1: 2$
Solution
When two waves with the same amplitude and frequency superpose at a point:
In-phase: Constructive interference leads to a maximum intensity.
Out-of-phase: Destructive interference leads to a minimum intensity.
The ratio of resultant intensities when the waves arrive in phase to when they arrive out of phase is: (2)
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