First slide

Surface tension

Question

The correct relation is

Easy

A

$r = \frac{2 T c o s θ}{h d g}$
B

$r = \frac{T \cos θ}{2 h d g}$
C

$r = \frac{h d g}{2 T \cos θ}$
D

$r = \frac{2 T}{h d g \cos θ}$

Solution

The capillary rise
$h = \frac{2 T}{r d g \cos θ}$

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