J & K CET Medical J & K - CET Medical Solved Paper-2005

  • question_answer
    If the heart pushes 1 cc of blood in 1 s under pressure \[20000\text{ }N{{m}^{2}},\] the power of heart is :

    A) \[0.02\text{ }W\]                            

    B)  \[400\text{ }W\]

    C)  \[5\times {{10}^{-10}}W\]                          

    D)  \[0.2\text{ }W\]

    Correct Answer: A

    Solution :

                     We know that \[Power=pressure\times volume\text{ }per\text{ }second\] Given, pressure\[=20,000\text{ }N{{m}^{2}},\] Volume \[=1\text{ }cc={{10}^{-6}}{{m}^{3}}\] \[\therefore \]  Power \[=20,000\times {{10}^{-6}}\] \[P=0.02W\]


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