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Q)

The terminal velocity of a liquid drop of radius 'r' falling through air is v. If two such drops are combined to form a bigger drop, the terminal velocity with which the bigger drop falls through air is ( Ignore any buoyant force due to air)

\[(a)\;\sqrt 2\; v \quad (b)\;2\;v \quad (c)\;\sqrt [3] {4} \;v \quad (d)\;\sqrt [3] {2} \;v \]

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A)
$ (c)\;\sqrt [3] {4} \;v$
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