If a pipe is closed at one end and open at the other, the closed end is a:
Correct answer: B. Node
- A. Antinode
- B. Node
- C. Rarefaction
- D. Crest
Explanation
A node is a point of zero amplitude in a standing wave. In a closed-open pipe, the closed end acts as a node because the air particles at the closed end cannot move, resulting in minimal displacement and pressure variation. At the closed end, the amplitude of the standing wave is at its minimum.
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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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