Manipal Medical Manipal Medical Solved Paper-2014

  • question_answer
    The rest mass of a body is \[{{m}_{0}}\]. If it moves with a velocity of 0.6 c m/s, then its relativistic mass is m, then

    A) \[m<{{m}_{0}}\]                 

    B) \[m={{m}_{0}}\]

    C) \[m>{{m}_{0}}\]                 

    D) None of these

    Correct Answer: C

    Solution :

    \[m=\frac{{{m}_{0}}}{\sqrt{1-\frac{{{v}^{2}}}{{{c}^{2}}}}}\] \[=\frac{{{m}_{0}}}{\sqrt{1-\frac{{{(0.6c)}^{2}}}{{{c}^{2}}}}}=\frac{m}{\sqrt{0.64}}=\frac{{{m}_{0}}}{0.8}\]


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