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JEE Main20244 Apr 2024Evening ShiftPhysicsMechanical Properties of FluidsActual

Given below are two statements : Statement I : The contact angle between a solid and a liquid is a property of the material of the solid and liquid as well. Statement II : The rise of a liquid in a capillary tube does not depend on the inner radius of the tube. In the light of the above statements, choose the correct answer from the options given below:

Options

  1. AStatement I is true but Statement II is false.
  2. BStatement I is false but Statement II is true.
  3. CBoth Statement I and Statement II are false.
  4. DBoth Statement I and Statement II are true.

Correct answer

A. Statement I is true but Statement II is false.

Step-by-step solution

Statement I is correct as we know contact angle depends on cohesine and adhesive forces. Statement II is incorrect because height of liquid is given by h== 2 T _C g r where r is radius of Tube (assuming length of capillary is sufficient).

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