Explanation
In a closed organ pipe, the fundamental frequency is f = v / 4L.
If both ends are opened, it behaves like an open pipe, and the fundamental frequency becomes f' = v / 2L.
So, f' = 2f.
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A. None of these
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B. Antinodes
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C. Overtones
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D. Nodes
Explanation
At the open end of an organ pipe, antinodes are formed. CK-12 Foundation
An antinode is a point of maximum displacement in a standing wave,
And since the air molecules at the open end of an organ pipe can vibrate freely, they create an antinode there.
ایک بند آرگن پائپ ایئر کالم کا تیسرا اوور ٹون پیدا کرنے کے لیے پرجوش ہے۔ معلوم ہوا کہ پائپ میں ہوا ______ ہے؟
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A. Three nodes and three antinodes
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B. Three nodes and four antinodes
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C. None of these
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D. Four needs and three antinodes
Explanation
- In a closed organ pipe, only odd harmonics are present, and the third overtone corresponds to the 7th harmonic. It has four nodes and three antinodes.
- The pattern alternates between nodes (points of no displacement) and antinodes (points of maximum displacement) in the air column.
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A. Closed-ended pipe
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B. Long pipe
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C. Short pipe
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D. Open-ended pipe
Explanation
In closed-ended pipes, the closed end acts as a node for certain harmonics,
Resulting in a richer harmonic content compared to open-ended pipes.
Short pipes also tend to have richer harmonics compared to long pipes.
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