Home Physics Wave and Sound JEE Main 2026 The fifth harmonic of a closed organ pipe is…
Physics Wave and Sound JEE Main 2026 MCQ (Single Correct)

The fifth harmonic of a closed organ pipe is found to be in unison with the first harmonic of an open pipe. The ratio of lengths of closed pipe to that of the open pipe is . The value of is .

A
3
B
4
C
1
D
2

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The correct answer is:
D

Fifth harmonic of closed organ pipe equals first harmonic of open pipe:


Since the ratio is , we get .

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