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Questions  

An open pipe of sufficient length is dipping in water with a speed v vertically. If at any instant l  is length of tube above water, then the rate at which fundamental frequency of pipe changes, is(speed of sound =c) 

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By Expert Faculty of Sri Chaitanya
a
cv/2l2
b
cv/4l2
c
c/2v2l2
d
c/4v2l2

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detailed solution

Correct option is B

Fundamental frequency  n=c4ldndt=-c4l2dldt=cv4l2

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Similar Questions

A closed pipe and an open pipe have their first overtones identical in frequency. Their lengths are in the ratio

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