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The length of two open pipes are l and...

The length of two open pipes are l and `(l+Deltai)` respectively. Neglecting end correction the frequency of beats between them will be approximately
(Here v is the speed of sound)

Text Solution

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Beat frequency `f_(1)-f_(2)`
`=(v)/(2l)-(v)/(2(l+Deltal))`
`=(v)/(2l)[1-((Deltal)/(l))^(-1)]~~(v)/(2l)[1-1+(Delta)/(l)]=(vDeltal)/(2l^(2))`
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