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Two capillary tubes of same diameter are...

Two capillary tubes of same diameter are put vertically one each in two liquids whose relative densities are 0.8 and 0.6 and surface tensions are 60 dyne/cm and 50 dyne/cm respectively. Ratio of heights of liquids in the two tubes `(h_(1))/(h_(2))` is

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The correct Answer is:
D
`h=(2Tcos theta)/(rdg)` [If diameter of capillaries are same and taking value of `theta` same for both liquids]
`therefore (h_(1))/(h_(2)) = ((T_(1))/(T_(2)))((d_(2))/(d_(1))) = ((60)/(50))xx((0.6)/(0.8)) = ((36)/(40)) = (9)/(10)`.
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