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If λ is the wavelength of sound wave in air column in the first wavelength in the 3rd mode for closed pipe of length l will be A) 4l/3b) 4l/7c) 4l/5D) 2l/3 |
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Answer» Frequency of closed orgen pipe = \(\frac{(2n-1)v}{4}\) f = \(\frac{(2n-1)v}{4}\) \(\frac{v}{\lambda}=\frac{(2n-1)v}{4l}\) \(\frac{4l}{5}=\lambda\) |
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