The beat wavelength lbeat is much longer than that of either superposed wave , l1 and...

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Physics

The beat wavelength lbeat is much longer than that of eithersuperposed wave , l1 and l2. Demonstrate this. They relate aslbeat-1 = (1/2)( l1-1 - l2-1) (hint: remember the condition for theformation of beats, and state it mathematically. If it takes morethan a couple of lines, you are on the wrong track)

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Given the relation we get Now one of the fundamental requirement for the formation ofbeats is that the 2 waves must have    See Answer
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