JEE Main & Advanced Physics Mathematical Tools, Units & Dimensions Question Bank Self Evaluation Test - Physical World, Units and Measurements

  • question_answer
    The ratio of the dimensions of Planck's constant and that of the moment of inertia is the dimensions of

    A) Time 

    B) frequency

    C) Angular momentum

    D) velocity

    Correct Answer: B

    Solution :

    [b] \[\frac{Planck's\,cons\tan t}{Moment\,of\,inertia}=\frac{\frac{2\pi I\omega }{n}}{I}\] \[[As\frac{nh}{2\pi }=I\omega ]\] \[=\frac{2\pi I(2\pi f)}{nI}=\left( \frac{4{{\pi }^{2}}}{n}.f \right)=[{{T}^{-1}}]\]


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