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# The Jength of a hollow pipe is 728 cm The air column in the pipe is vibrating and has sevcn noces...

## Question

###### The Jength of a hollow pipe is 728 cm The air column in the pipe is vibrating and has sevcn noces

The Jength of a hollow pipe is 728 cm The air column in the pipe is vibrating and has sevcn noces

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