NEET Sample Paper NEET Sample Test Paper-51

  • question_answer A thin disc of mass 9M and radius R from which a disc of radius \[R/3\] is cut, as shown in figure. Then moment of inertia of the remaining disc about 0, perpendicular to the plane of disc is-

    A) \[4\text{ }M{{R}^{2}}\]                      

    B) \[9\text{ }M{{R}^{2}}\]

    C) \[\frac{37}{9}\,M{{R}^{2}}\]              

    D) \[\frac{40}{9}M{{R}^{2}}\]

    Correct Answer: A

    Solution :

    \[I={{I}_{1}}-{{I}_{2}}\] \[=\,\,4\,M{{R}^{2}}\]

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