NEET Physics Mathematical Tools, Units & Dimensions Question Bank Dimensions

  • question_answer
    Which of the following quantities is dimensionless?                                  [MP PET 2002]

    A)             Gravitational constant

    B)             Planck's constant

    C)             Power of a convex lens           

    D)             None

    Correct Answer: D

    Solution :

                    \[[G]=[{{M}^{-1}}{{L}^{3}}{{T}^{-2}}];\,[h]=[M{{L}^{2}}{{T}^{-1}}]\] Power = \[\frac{1}{\text{focal length}}=[{{L}^{-1}}]\]             All quantities have dimensions


You need to login to perform this action.
You will be redirected in 3 sec spinner