A musical organ produces notes by blowing air into a set of pipes that are open at one end and closed at the other.
The speed of sound in the air in the pipes is $320{\text{ }}m{\text{ }}{s^{ - 1}}$.
What is the lowest frequency of sound produced by a pipe of length $10 m$?
1 )
$4Hz$
$8Hz$
3 )
$16Hz$
4 )
$32Hz$
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