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11th Class Physics Mechanical Properties of Fluids / तरलों के यांत्रिक गुण Question Bank Mechanical Properties of Fluids Conceptual Problems

  • question_answer
    How can we check whether the barometric tube contains air or not?

    Answer:

                    If on raising or lowering the barometric tube in a trough of mercury, the height of mercury column changes, then air is present in the barometric tube.


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