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NEET Sample Paper NEET Sample Test Paper-72

  • question_answer
    The percentage errors in the measurement of mass and speed are \[2\,% and 3\,%\] respectively. How much will be the maximum error in the estimation of the kinetic energy obtained by measuring mass and speed?

    A) \[11%\]             

    B) \[8\,%\]

    C) \[5\,%\]                         

    D) \[1%\]

    Correct Answer: B

    Solution :

    \[\therefore \,\,\,\,\,\,E=\frac{1}{2}\,m{{v}^{2}}\] \[\therefore \,\,\,\,\,\,\,\,%\,\,Error in KE\] \[= % error in mass + 2 \times  % error in velocity\] \[=2+2\,\,\times \,\,3\,\,=\,\,8\,%\]


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