11th Class Physics Physical World / भौतिक जगत Question Bank 11th CBSE Physics Mathematical Tools, Units & Dimensions

  • question_answer
    Pressure is defined as momentum per unit volume. Is it true?

    Answer:

                    No, as it is not dimensionally true. \[\frac{momentum}{volume}=\frac{{{M}^{1}}{{L}^{1}}{{T}^{-1}}}{{{L}^{3}}}=\left[ {{M}^{1}}{{L}^{-2}}{{T}^{-1}} \right]\] \[\Pr essure=\frac{Force}{area}=\frac{ML{{T}^{-2}}}{{{L}^{2}}}=\left[ {{M}^{1}}{{L}^{-1}}{{T}^{-2}} \right]\]


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