Question
A pipe open at both ends has a fundamental frequency f in air. The pipe is now dipped vertically in a water drum to half of its length. The fundamental frequency of the air column is now equal to :
NEET
Physics
Waves and Sound
2025
NEET 2025
NEET Physics Question (2025) — Solution
Options
- A. f 2
- B. f
- C. 3 f 2
- D. 2 f
Answer
B. f
Step-by-step solution
For open pipe f = V 2 When half of its length is dipped in water, Now it is COP. aligned & f ^ = V 4( / 2) \\ & f ^ = V 2 \\ & f ^ = f aligned
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