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NEET2019PhysicsMechanical Properties of FluidsActual

Find the height of liquid in capillary tube, if surface tension of liquid = S , radius of capillary tube = r and acceleration due to gravity = g .

Options

  1. A2 S r g
  2. B2 S rg
  3. C2 S r g
  4. DNone of these

Correct answer

A. 2 S r g

Step-by-step solution

Height of liquid in a capillary tube (Ascent formula) is given by H = 2 S rg where, S= surface tension, = density of liquid, r= radius of capillary and = angle of contact.

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