Constructive interference occurs at a particular instant

Reference no: EM13671742

The acoustical system shown in the figure below is driven by a speaker emitting sound of frequency 614 Hz. (Take the speed of sound as 345 m/s.)

a) If constructive interference occurs at a particular instant, with what minimum amount should the path length in the upper U-shaped tube be increased so that destructive interference occurs instead?

b) What minimum increase in the original length of the upper tube will again result in constructive interference?

Reference no: EM13671742

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