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If the velocity of sound in air is 320 m...

If the velocity of sound in air is `320 m//s`, then the maximum and minimum length of a pipe closed at one end , that would produce a just audible sound would be

A

2 m

B

4 m

C

6 m

D

1 m

Text Solution

Verified by Experts

The correct Answer is:
B
For the sound that is just audible, n = 20 Hz.
` :. ` for an organ pipe
`n = V/(4l) :. l_("max") = V/(4 xx n_("min")) = 320/(4 xx 20) = 4 m `
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