When a stationary wave is setup in an air column which is closed from one end,a node is formed
Correct answer: B. At the closed end of the pipe
- A. Outside the pipe.
- B. At the closed end of the pipe
- C. At the opened end of the pipe
- D. Near the middle point of the pipe
Explanation
In a closed air column, stationary waves form with nodes at the closed end and antinodes at the open end. The correct answer is Option B, as a node is formed at the closed end due to the boundary condition that air cannot move at this point. Option A is incorrect because nodes form inside the pipe, not outside. Option C is incorrect because an antinode, not a node, is formed at the open end. Option D is incorrect because the middle of the pipe is more likely to have an antinode in a closed-end air column.
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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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