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Two different liquids are flowing in two...

Two different liquids are flowing in two tubes of equal radius. The ratio of coefficients of viscosity of liquids is 52:49 and the ratio of their densities is `13:1`, then the ratio of their critical velocities will be

A

`4 : 49`

B

`49 : 4`

C

`2 : 7`

D

`7 : 2`

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The correct Answer is:
A
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