SSC
PHYSICS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Closed pipe resonator
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Open pipe resonator
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Closed pipe harmonic
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Open pipe harmonic
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Detailed explanation-1: -In a closed pipe resonator, when a sound wave (high pressure) hits the closed end of the pipe, it reflects with the same pressure. This is analogous to a wave reflecting off a free end. The shortest column of air that can have an antinode in a closed pipe is ΒΌ the length of the wave.
Detailed explanation-2: -What is a closed-pipe resonator? A pipe or cylindrical air column closed at both ends. A pipe with an antinode at the closed end. A pipe with a node at the open end.
Detailed explanation-3: -At a closed pipe end the sound must bounce, be reflected, from the closed end. At an open end the sound is also reflected. In order for the sound to diffract out of the open end of the tube a reflection must be generated travelling back up the tube.