Two drops of the same radius are falling...

Two drops of the same radius are falling through air with a steady velcoity of `5 cm s^(-1).` If the two drops coalesce, the terminal velocity would be

A

`2.5 cm s^(-1)`

B

`10 cm s^(-1)`

C

`5sqrt2 cm s^(-1)`

D

`5xx4^(1//3)cm s^(-1)`

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The correct Answer is:

D

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