Which harmonics can be produced by an organ pipe closed at one end?
Correct answer A. Only the odd harmonics
Explanation
A closed pipe must have a node at the closed end and an antinode at the open end. This allows only L = λ/4, 3λ/4, 5λ/4 and so on, giving frequencies f₁, 3f₁, 5f₁: odd harmonics only.
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