In the experiment to determine the speed of s | vedclass

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(A) In a resonance column experiment, the tuning fork is held above the open end of the tube. To ensure that the sound waves propagate effectively dow

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The prongs of the tuning fork are kept in a vertical plane.

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(A) In a resonance column experiment, the tuning fork is held above the open end of the tube. To ensure that the sound waves propagate effectively down the tube, the prongs of the tuning fork are kept in a vertical plane. For a tube closed at one end, the resonance occurs when the length of the air column $L$ satisfies the condition $L + e = (2n - 1) \frac{\lambda}{4}$, where $e$ is the end correction and $n = 1, 2, 3, ...$. The first resonance occurs at $L_1 + e = \frac{\lambda}{4}$ and the second resonance occurs at $L_2 + e = \frac{3\lambda}{4}$. Subtracting these, we get $L_2 - L_1 = \frac{\lambda}{2}$. Thus, the difference between the lengths of the two resonating air columns is equal to half the wavelength of sound in air.

In the experiment to determine the speed of sound using a resonance column, which of the following statements is correct?

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