A small steel ball of radius r experiences a viscous force F when it is falling in a jar of glycerine with terminal velocity v. The viscons force experienced by a steel ball of radius r/2 falling in glycerine with terminal velocity v/2 is

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answer is C.

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Detailed Solution

F=6πηrv F′=6πηr2×v2=14×6πηrv=F4So the correct choice is (c).

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