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NEET 1997 (AIPMT) · Organ Pipes & Resonance Tube

Organ Pipes & Resonance Tube question from NEET 1997 (AIPMT)

Q120NEET 1997 · AIPMTEasy

Organ Pipes & Resonance Tube

A cylindrical tube, open at both ends has fundamental frequency $f$ in air. The tube is dipped vertically in water, so that half of it is in water. The fundamental frequency of air column is now

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Answer: (d)

Open pipe: $f = \frac{v}{2L}$ .
Half in water leaves a closed pipe of length $\frac{L}{2}$ : $f' = \frac{v}{4(L/2)} = \frac{v}{2L}$ .
So the answer is (d) $f$ .

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