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NEET Physics Work, Energy, Power & Collision / कार्य, ऊर्जा और शक्ति NEET PYQ-Work Energy Power and Collision

  • question_answer
    The bulk modulus of a spherical object is \['B'\]. If it is subjected to uniform pressure \['p',\] the fractional decrease in radius is            [NEET-2017]

    A) \[\frac{\rho }{3B}\]       

    B) \[\frac{\rho }{B}\]

    C) \[\frac{B}{3p}\]

    D)  \[\frac{3p}{B}\]

    Correct Answer: A

    Solution :

    [a]        \[B=\frac{p}{\left( \frac{\Delta V}{V} \right)}\]
    \[\frac{\Delta V}{V}=\frac{p}{B}\]
    \[3\frac{\Delta r}{r}=\frac{p}{B}\]
    \[\frac{\Delta r}{r}=\frac{p}{3B}\]
               


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