MHT CET 2025 Physics question
The fundamental frequency of a closed pipe is 400 Hz. If length of the pipe is filled with water, the frequency of the 2 harmonic of the pipe will be (Neglect end correction)
Answer: (D)
Solution
For a closed pipe of length : Hz. Filling one-third of the pipe with water leaves an air column of length (closed at the water surface), so the new fundamental is Hz.
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