The frequency of the fundamental node of open end organ pipe is 400 Hz. If one end of the pipe is closed, the fundamental frequency will be:
Correct answer: D. 200 Hz
- A. 800 Hz
- B. 600 Hz
- C. 400 Hz
- D. 200 Hz
Explanation
fo= v/2ffc = v/4f = 1/2(v/2f) --> fc = 1/2(400) = 200 Hz
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About Waves
Progressive waves transfer energy through oscillations, with wavelength, frequency, amplitude and wave speed related by v = fλ; sound speed depends on the medium. Superposition produces interference and stationary waves in strings and organ pipes, while simple harmonic motion describes the oscillation itself and must be distinguished from wave propagation.
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