A stationary wave is set up in a pipe of length L, which is is open from one end. There are three nodes. How many antinodes are there in the stationary wave?
Correct answer: B. 3
- A. 2
- B. 3
- C. 4
- D. 6
Explanation
Nodes and antinodes are the same in close pipe.
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About Stationary Waves
Stationary waves form when two waves of the same frequency and amplitude travel in opposite directions and interfere. The topic covers nodes, antinodes, wavelength, phase, resonance, and the allowed frequencies on strings and in air columns. Unlike progressive waves, stationary waves do not transfer energy from one point to another.
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