What is the distance between the closed end and open end of a pipe vibrating in the 7th harmonic?

At the open end of organ pipe

An organ pipe of length L open at both ends is found to vibrate in its harmonic when sounded with a tuning fork of 480Hz. What should be the length of a pipe closed at one end, so that it also vibrates in its first harmonic with the same tuning fork?

An organ pipe P_(1) open at one end vibrating in its first harmonic and another pipe P_(2) open at ends vibrating in its third harmonic are in resonance with a given tuning fork. The ratio of the length of P_(1) to that P_(2) is

An organ pipe open at one end is vibrating in first overtone and is in resonance with another pipe open at both ends and vibrating in third harmonic. The ratio of length of two pipes is–

A sound wave travelling along an air column of a pipe gets reflected at the open end of the pipe. What is the phase difference between the incident and reflected waves at the open end?

A hollow pipe of length 0.8m is closed at one end. At its open end a 0.5 m long uniform string is vibrating in its second harmonic and it resonates with the fundamental frequency of the pipe. If the tension in the wire is 50 N and the speed of sound is 320 ms^(-1) , the mass of the string is

A hollow pipe of length 0.8m is closed at one end. At its open end a 0.5 m long uniform string is vibrating in its second harmonic and it resonates with the fundamental frequency of the pipe. If the tension in the wire is 50 N and the speed of sound is 320 ms^(-1) , the mass of the string is

First overtone frequency of a closed organ pipe is equal to the first overtone frequency of an open organ pipe. Further nth harmonic of closed organ pipe is also equal to the mth harmonic of open pipe, where n and m are (A)5,4 (B)7,5 (C)9,6 (D)7,3

In closed organ pipe at one end-

An organ pipe P_1 closed at one end and vibrating in its first overtone, and another pipe P_2 open at both ends and vibrating in its third overtone, are in resonance with a given tuning fork. The ratio of the length of P_1 to that of P_2 is