Viscous drag force depends on $...........$
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$F=\eta A \frac{V}{d} \left\{\begin{array}{l}\text { Where, } \\ F=\text { Drag Force } \\ \eta=\text { Viscosity of fluids } \\ A=\text { Area } \propto \text { size of body } \\ V=\text { Velocity }\end{array}\right.$
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