question_answer

An open pipe of length / vibrates in fundamental mode. The pressure variation is maximum at:

A)  \[\frac{l}{4}\] from ends             

B)  the middle of pipe

C)  the ends of pipe

D)  at \[\frac{l}{8}\] from ends of pipe

Correct Answer: B

Solution :

                 At nodes displacement and velocity each are zero, while strain, pressure and energy are maximum while at antinode displacement is maximum and pressure and energy is minimum, therefore, the pressure will be maximum at the middle of the open end or gas pipe.