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MHT CET 2021 (24 Sep, Shift 1) · Organ Pipes & Resonance Tube

Organ Pipes & Resonance Tube question from MHT CET 2021 (24 Sep, Shift 1)

Q82MHT CET 2021 · 24 SEP · SHIFT 1Easy

Organ Pipes & Resonance Tube

When an air column in a pipe open at both ends vibrates such that four antinodes and three nodes are formed, then the corresponding mode of vibration is

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Answer: (b)

An open pipe in the $p$ -th harmonic has $p$ nodes and $p+1$ antinodes.
3 nodes, 4 antinodes $\Rightarrow p=3$ , the third harmonic.
Third harmonic = second overtone, so the answer is (b).

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