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NEET Sample Paper NEET Sample Test Paper-42

  • question_answer
    If the dimensions of a physical quantity are given by\[{{\operatorname{M}}^{a}}{{T}^{b}}{{T}^{c}}\], then the physical quantity will be:

    A) Force if a = 0, b = -1, c = -2

    B) Pressure if a = 1, b = -1, c = -2

    C) Velocity if a = 1, b = 0, c = -1

    D) Acceleration if a = 1, b = 1, c = -2

    Correct Answer: B

    Solution :

    Dimensional formula \[\operatorname{Force} = ML{{T}^{-2}}\] \[\operatorname{Pressure} = M{{L}^{-1}}{{T}^{-2}}\] \[\operatorname{Velocity} = L{{T}^{-1}}\] \[\operatorname{Acceleration} = L{{T}^{-2}}\] \[\operatorname{On} comparing with {{M}^{a}}{{L}^{b}}{{T}^{c}}\] We get pressure with a = 1, b = -1, c = -2


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