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Two spheres of equal masses but radii r(...

Two spheres of equal masses but radii `r_(1) and r_(2)` are allowed to fall in a liquid of infinite column. The ratio of their terminal velocities is:

A

1

B

`r_(1): r_(2)`

C

`r_(2): r_(1)`

D

`sqrtr_(1): sqrtr_(2)`

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