Question

Two capillaries of same diameter are dipped into liquids of specific gravity 0.4 and 0.8 respectively. If their surface tensions are in the ratio 6: 5 then the ratio of
liquids in them will be​

Answer 1

YOUR ANSWER IS IN THE ATTACHMENT

Answer 2

Concept: Surface tension is the tendency tendency of liquid surface to shrink into the lower surface area possible.

Given: Space gravity of two capillaries are 0.4 and 0.8 respectively. Surface tensions are in the ratio 6: 5.

Find: Calculate the ratio of liquid.

Solution: Diameter of both capillaries are same.

$T_{1} :T_{2}$=6:5

h=$\frac{2Tcosx}{pgr}$

So, h∝$\frac{T}{p}$

$\frac{h_{1} }{h_{2} }=\frac{T_{1} }{T_{2} } X\frac{p_{2} }{p_{1} }$

    = $\frac{6}{5} X\frac{0.8}{0.4}$

    = $\frac{12}{5}$

Final answer: Required ratio is 12:5.

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