NEET Physics Mathematical Tools, Units & Dimensions Question Bank Dimensions

  • question_answer
    The dimensions of inter atomic force constant are                                           [UPSEAT 1999]

    A)             \[M{{T}^{-2}}\]

    B)             \[ML{{T}^{-1}}\]

    C)             \[ML{{T}^{-2}}\]

    D)               \[M{{L}^{-1}}{{T}^{-1}}\]

    Correct Answer: A

    Solution :

                    \[K=Y\times {{r}_{0}}\]= \[[M{{L}^{-1}}{{T}^{-2}}]\times [L]\]= \[[M{{T}^{-2}}]\]             \[Y\]= Young's modulus and \[{{r}_{0}}\] = Interatomic distance  


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