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JEE Main & Advanced JEE Main Paper (Held On 11 April 2014)

  • question_answer
    A tank with a small hole at the bottom has been filled with water and kerosene (specific gravity 0.8). The height of water is 3m and that of kerosene 2m. When the hole is opened the velocity of fluid coming out from it is nearly: (take g = 10 ms? 2 and density of water \[={{10}^{3}}kg\,{{m}^{-3}}\])   [JEE Main Online Paper ( Held On 11 Apirl  2014 )

    A) \[10.7m{{s}^{-1}}\]                         

    B) \[9.6m{{s}^{-1}}\]

    C) \[8.5m{{s}^{-1}}\]                           

    D) \[7.6m{{s}^{-1}}\]

    Correct Answer: B

    Solution :

    According to Toricelli?s theorem, Velocity of efflex,\[{{V}_{eff}}=\sqrt{2gh}=\sqrt{2\times 9.8\times 5}\cong 9.8{{s}^{-1}}\]


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