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  4. [ ML -2 T -2] represents dimensional formula of which of the following physical quantities?

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Q. $\left[ ML ^{-2} T ^{-2}\right]$ represents dimensional formula of which of the following physical quantities?

Physical World, Units and Measurements

Solution:

As, $\left[ ML ^{-2} T ^{-2}\right]= \frac{\left[ MLT ^{-2}\right]}{[ L ]\left[ L ^{2}\right]}$
$=\frac{\text { Force }}{\text { Distance } \times \text { area }}$
$=\frac{\text { Pressure }}{\text { Distance }}$
=Pressure gradient