Department of Pre-University Education, KarnatakaPUC Karnataka Science Class 11

# The rise of a liquid in a capillary tube depends on - Physics

Short Note

The rise of a liquid in a capillary tube depends on

(a) the material
(b) the length
(d) the inner radius of the tube

#### Solution

$\text{ Height of the liquid in the capillary tube is given by }:$

$\text{ h } = \frac{2Scos\theta}{r\rho g}$

$\text{ h = Height }$

$\text{ S = Surface tension }$

$\text{ r = Inner radius of the tube }$

$\rho = \text{ Density of the liquid }$

$\text{ g = Acceleration due to gravity }$

$a) \theta \text{ and } \rho \text{ depend upon the material of the capillary tube and the liquid }.$

$b) \text{ h is dependent on the length of the tube . If the length is insufficient, then h will be low } .$

$d) \text{ r is the inner radius of the tube } .$

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#### APPEARS IN

HC Verma Class 11, 12 Concepts of Physics 1
Chapter 14 Some Mechanical Properties of Matter
MCQ | Q 3 | Page 299