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MHT CET 2026 (19 Apr, Shift 2) · Organ Pipes & Resonance Tube

Organ Pipes & Resonance Tube question from MHT CET 2026 (19 Apr, Shift 2)

Q23MHT CET 2026 · 19 APR · SHIFT 2Medium

Organ Pipes & Resonance Tube

In a resonance tube open at one end, the end correction is $1.1$ cm. If the shortest length of resonating air column with a tuning fork is $18$ cm, the next resonating length will be

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Answer: (d)

First resonance: $l_1 + e = \frac{\lambda}{4} \Rightarrow \frac{\lambda}{4} = 18 + 1.1 = 19.1$ cm.
Second resonance: $l_2 + e = \frac{3\lambda}{4} = 3 \times 19.1 = 57.3$ cm.
$l_2 = 57.3 - 1.1 = 56.2$ cm
So the answer is (d) 56.2 cm.

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