List of top Physics Questions on Waves asked in COMEDK UGET

The fundamental frequency of sound produced in an open pipe of length \(L_1\) is same as the frequency of the 3rd harmonic of the sound produced in the closed pipe of length \(L_2\). Then the ratio of \(\frac{L_1}{L_2}\) is:

An open pipe is in second harmonic with frequency \( f_1 \). One end of the tube is closed and frequency is increased to \( f_2 \) and it resonates again with nth harmonic. For what value of \( n \), the ratio of \( \frac{f_1}{f_2} \) is \( \frac{4}{5} \)?