1.

Which of the following quantity is unitless ?A. Velocity gradientB. Pressure gradientC. Displacement gradientD. Force gradient

Answer» Correct Answer - C
Velocity gradient `=(m//s)/( m) = s^(-1)`
Pressure gradient `=(kg //mxs^(2))/( m) = (kg)/(m^(2) xx s^(2))`
Displacement gradient `= (m)/(m)` = unitless
Force gradient `= (kg xx m//s^(2))/(m) = kg//s^(2)`


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