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CET Karnataka Engineering CET - Karnataka Engineering Solved Paper-2000

  • question_answer
    An empty vessel is partially filled with water, then the frequency of vibration of air column in the vessel:

    A)  remains same

    B)  decreases

    C)  increases

    D)  first increases then decreases

    Correct Answer: C

    Solution :

     The frequency of the air column is\[=\frac{\upsilon }{4l}\propto \frac{1}{l}\]Where \[l\] is the length of the air column. As it is clear that when the vessel is partially filled with water, then length of air column decreases. Hence the frequency is increased.


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