A source of sound placed at the open end...

A source of sound placed at the open end of a resonance column sends an acoustic wave of pressure amplitude `P_(0)` inside the tube. If the atmospheric pressure is `P_(A)`, then the ratio of maximum and minimum pressure at the closed end of the tube will be

`((p_(A)+p_(0)))/((p_(A)-p_(0)))`

`((p_(A)+2p_(0)))/((p_(A)-2p_(0)))`

`(p_(A))/(p_(0))`

`((p_(A)+(1)/(2)p_(0))/(p_(A)-(1)/(2)p_(0)))`

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