An empty vessel is partially filled with water. The frequency of vibration of air column in the vessel

Question

An empty vessel is partially filled with water. The frequency of vibration of air column in the vessel (A) decreases (B) increases (C) depends on the purity of water (D) remains the same

Tardigrade Admin · Accepted Answer

Frequency of a closed-pipe is v=((2 n+1) c/4 l) When water is filled, the effective l decreases, hence v increases.

Q. An empty vessel is partially filled with water. The frequency of vibration of air column in the vessel

decreases

increases

depends on the purity of water

remains the same

Frequency of a closed-pipe is
$v = \frac{( 2 n + 1 ) c}{4 l}$
When water is filled, the effective $l$ decreases,
hence $v$ increases.

Q. An empty vessel is partially filled with water. The frequency of vibration of air column in the vessel

decreases

increases

depends on the purity of water

remains the same

Frequency of a closed-pipe is v=4l(2n+1)c​ When water is filled, the effective l decreases, hence v increases.

Frequency of a closed-pipe is
$v = \frac{( 2 n + 1 ) c}{4 l}$
When water is filled, the effective $l$ decreases,
hence $v$ increases.