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Q1.The dimensions of velocity gradient are
1)([M^{0}L^{1}T^{-1}])
2)([M^0L^{-1}T^{0}])
Q2.The drag force, as given by Newton's law is proportional to Ax, where (\mathrm{x})= ___ and A is ___
1)1, Area of cross section of the layers
2)2 , Area of cross section of the layers
3)1 , Area of contact of the layers
4)2, Area of contact of the layers
Q3.A metal plate of area A, is placed on a layer of oil, of thickness (d). The metal plate is pushed with a force and the force is removed. The velocity of the plate is given as (\mathrm{v}=\mathrm{ue}^{-\lambda_{\mathrm{t}}}), where (\lambda) is Independent of
1)The initial force, but depends on initial velocity
2)Mass of the body
3)Coefficient of viscosity
4)Thickness of the layer
Q4.Angle between the viscous force and the direction of flow of the liquid is