How will the fundamental frequency of a closed organ pipe be affected if instead of air, it is filled with a gas heavier than air?
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How will the fundamental frequency of a closed organ pipe be affected if instead of air, it is filled with a gas heavier than air?
How will the fundamental frequency of a closed organ pipe be affected if instead of air, it is filled with a gas heavier than air?
Fundamental frequency of a closed organ pipe is, v = v – 4l, where v is the velocity of sound in air. When air is replaced by gas heavier than air, then velocity of sound in gas will decrease. (Because, v ∝ 1/√ρ, where ρ is the density of the gas)
Hence, the fundamental frequency will also decrease.