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Resonance tube - class-XII
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As an empty vessel is filled with water, its fundamental frequency
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A
Increases
💡 Explanation:
An empty vessel with a base is like a closed organ pipe , and fundamental frequency of a closed organ pipe is given by ,
$n _{1}=v/4l$ ,
where $l=$ length of air column in pipe (height of pipe) ,
from above we get,
$n _{1}\propto 1/l$ ,
when the empty vessel is filled with water , the length of air column $l$ in pipe decreases and therefore fundamental frequency $n _{1}$ increases as length of air column and fundamental frequency are inversely proportional to each other .