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Concepts Of Physics MCQ Edition [Volume 1]
Exam
Concepts Of Physics MCQ Edition [Volume 1]
Subject
Physics
Chapter
Some Mechanical Properties of Matter

Concepts Of Physics MCQ Edition [Volume 1] · Physics · Some Mechanical Properties of Matter

The rise of a liquid inside a capillary tube is dependent on

The rise of a liquid inside a capillary tube is dependent on

Options

  1. Athe length
  2. Bthe material
  3. Cthe inner radius of the tube
  4. Dthe outer radius

Correct answer

C. the inner radius of the tube

Step-by-step solution

The capillary rise hh is given by Jurin's law:

h=2Tcos⁡θρgrh = \dfrac{2T \cos \theta}{\rho g r}

where TT is the surface tension of the liquid, hetaheta is the angle of contact, hoho is the density of the liquid, gg is the acceleration due to gravity, and rr is the inner radius of the capillary tube.

The angle of contact hetaheta depends on the nature of the liquid and the material of the capillary tube.

Thus, the rise of the liquid depends on the material of the tube and its inner radius. It is independent of the length and the outer radius of the tube.
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