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if a ball of steel (density rho=7.8 g//c...

if a ball of steel (density `rho=7.8 g//cm^(3)`) attains a terminal velocity of `10 cm//s` when falling in a tank of water (coefficient of viscosity, `eta_(water) =8.5xx10^(-4)`Ps s), then its terminal velocity in glycerine `(rho =1.2 g//cm^(2), eta =13.2 Pa s)` would be nearly

A

`1.6 xx 10^(-5) cms^(-1)`

B

`6.25 xx 10^(-4) cms^(-1)`

C

`6.45xx 10^(-4) cms^(-1)`

D

`1.5 xx 10^(-5) cms^(-1)`

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