AP EAMCET · PHYSICS · Waves and Sound
In a closed organ pipe, the number of nodes formed in fifth and ninth harmonics are respectively
- A 5,9
- B 3,5
- C 5,7
- D 2,4
Answer & Solution
Correct Answer
(B) 3,5
Step-by-step Solution
Detailed explanation
For a closed organ pipe, the \( (2k-1)^{th} \) harmonic has \( k \) nodes. For 5th harmonic: \( 2k-1=5 \implies k=3 \). Nodes = 3. For 9th harmonic: \( 2k-1=9 \implies k=5 \). Nodes = 5.
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