The figure helps to establish the relationship between force andA. area of contactB. velocity gradientC. coefficient of viscosityD. both (a) and (b) .

The figure helps to establish the relationship between force andA. ar

1.	The figure helps to establish the relationship between force andA. area of contactB. velocity gradientC. coefficient of viscosityD. both (a) and (b) .
Answer» Correct Answer - D This figure clearly helps to establish the relation that force is directly proportional to area of contact and velocity gradient. `f prop A, f prop (du)/(dz)` `therefore f prop A (du)/(dz)` `f = eta A(du)/(dz)` Where, `eta` = coefficient of viscosity. A = Area of contact. `(du)/(dz)`= velocity gradient.

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The figure helps to establish the relationship between force andA. area of contactB. velocity gradientC. coefficient of viscosityD. both (a) and (b) .

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