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JEE Main & Advanced Physics Wave Mechanics Question Bank Self Evaluation Test - Waves

  • question_answer
    A closed organ pipe (closed at one end) is excited to support the third overtone. It is found that air in the pipe has          

    A)  three nodes and three antinodes

    B)  three nodes and four antinodes

    C) four nodes and three antinodes

    D) four nodes and four antinodes

    Correct Answer: D

    Solution :

    [d] Third overtone has a frequency 7n, which means \[L=\frac{7\lambda }{4}\]= three full loops + one half loop, which would make four nodes and four antinodes.


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