question_answer

An organ pipe emits a fundamental note of frequency\[\mathbf{128}\text{ }\mathbf{Hz}\]. On blowing into it more strongly it produces the first overtone of frequency\[\mathbf{384}\text{ }\mathbf{Hz}\]. What is the type of pipe - closed or open?                                    

Answer:

                The organ pipe must be a closed organ pipe, because the frequency of the first overtone is 3 times the fundamental frequency.