A solid ball of volume V is dropped in a viscous liquid. It experiences a viscous force F. If the solid ball of volume 2V of the same material is dropped in the same fluid, then the viscous force acting on it will be _____.

2 F

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2 n F

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\frac{F}{2}

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n \frac{F}{2}

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Solution

The correct option is A $2 F$
As the volume and weight of liquid get doubled, the viscous force will also gets doubled.

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2 V

V

ρ_{1}

ρ_{1} (ρ_{2} < ρ_{1})

v

F_{v i s c o u s} = - k v^{2} (k > 0)

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