Correct Option is (D) All of these
We know that , the viscous force
\(F = \eta A \left(\frac{dv}{dx}\right)\)
where,
F = Viscous Force
\(\eta\) = Viscocity cofficient
A = Area
dv = velocity change with dx
then viscous force is directly proportional to
\(F \propto \eta\)
\(F \propto A \)
\(F \propto v\)
Then , all option is correct
