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The air columns in two tubes closed at one end vibrating in their fundamental modes produce 2 beats per second. The number of beats produced per second when the same tubes are vibrated in their fundamental mode with their both ends open are
The air columns in two tubes closed at one end vibrating in their fundamental modes produce 2 beats per second. The number of beats produced per second when the same tubes are vibrated in their fundamental mode with their both ends open are
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For a pipe of a given length $L$:
- Fundamental frequency of a closed pipe: $f_c = v/4L$. (Only odd harmonics are present).
- Fundamental frequency of an open pipe: $f_o = v/2L$. (All harmonics are present).
A simple relationship to remember is $f_o = 2f_c$.
Updated On: Mar 30, 2026
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The Correct Option is D
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