NEETPhysicsMechanical Properties of Fluids
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
- AStatement I is true but Statement II is false.
- BStatement I is false but Statement II is true.
- CBoth Statement I and Statement II are false.
- 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).