STANDARD Physics Harmonics in Pipes MCQ Question
In an organ pipe of length L open at both ends, the fundamental mode has a frequency (where v is a speed of sound in air)
v/2L and only odd harmonics are present.
v/2L and only even harmonics are present.
v/2L and all harmonics are present.
v/4L and only odd harmonics are present.
Correct Answer
Detailed Explanation
An organ pipe of length L open at both ends vibrates with frequencies given by vₙ = nv/2L where n = 1, 2, 3, 4, .... The fundamental frequency corresponds to n = 1 and is given by v₁ = v/2L. In an open pipe all harmonics are present.
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