Q. An empty vessel is partially filled with water, then the frequency of vibration of air column in the vessel
A) Remains same
B) Decreases
C) Increases
D) First increases then decreases
Explanation
(c) For closed pipe in general $n = \frac{v}{4l}(2N - 1) \Rightarrow n \propto \frac{1}{l}$
i.e. if length of air column decreases frequency increases
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.