Figure below shows air molecular displacement in a closed tube. The tube is closed at the left end and exposed to surrounding at the right end. Which of the following statement(s) is/are CORRECT about the standing wave in the tube? A. The mode of the standing wave is n = 5. B. There are three displacement nodes in the tube. C. There are three pressure fluctuations antinodes in the tube. D. The pressure fluctuation is maximum at the right end.

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Stretched string

A stretched string is a wire which is made up of any metal that must have a larger length compared to its thickness. The ends of the wire are fixed, and when they oscillate or are plucked, it produces two reflected transverse waves of the same frequency and same amplitude. The waves or pulses are traveling in alternate directions and superimpose with one another. This waveform is named standing or stationary waves.