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JEE Main & Advanced Physics Fluid Mechanics, Surface Tension & Viscosity / द्रव यांत्रिकी, भूतल तनाव और चिपचिपापन Question Bank Self Evaluation Test - Mechanical Properties of Fluids

  • question_answer
    A square box of water has a small hole located in one of the bottom comer. When the box is fall and sitting on a level surface, complete opening of the whole results in a flow of water with a speed\[{{v}_{0}}\], as shown in figure. When the box is half empty, it is tilted by \[45{}^\circ \] so that the hole is at the lowest point. Now the water will flow out with a speed of    

    A) \[{{v}_{0}}\]

    B) \[{{v}_{0}}/2\]

    C) \[{{v}_{0}}/\sqrt{2}\]

    D) \[{{v}_{0}}/\sqrt[4]{2}\]

    Correct Answer: D

    Solution :

    [d] \[{{v}_{0}}=\sqrt{2gh}\Rightarrow {{v}_{2}}=\sqrt{2g\frac{h}{\sqrt{2}}}=\frac{{{v}_{0}}}{\sqrt[4]{2}}\]


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