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NEET Sample Paper NEET Sample Test Paper-7

  • question_answer
    The tube shown in the figure is of uniform cross-section liquid flows through it at a constant speed in the direction shown by the arrows. The liquid exerts:

    A)  a net force to the right on the tube

    B)  a net force to the left on the tube

    C)  a clockwise torque on the tube

    D)  an anti-clockwise torque on the tube

    Correct Answer: C

    Solution :

    The liquid undergoes a change in momentum at each bend, due to change in its velocity while speed will remain constant. The two forces at two bends from a couple exerting clockwise torque on the arm BC of the tube.


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