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PHYSICS

JAMB 2013 - Question 23

Physics 2013 JAMB Past Questions - Question 23: The rise or fall of a liquid in a narrow tube is because of the

Choose the correct answers from the options given.

The rise or fall of a liquid in a narrow tube is because of the

A: viscosity of the liquid

B: surface tension of the liquid

C: friction between the walls of the tube and the liquid

D: osmotic pressure of the liquid

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Correct Answer

Explanation

The rise and fall of a liquid in anarrow tube is due to surface tension of the liquid.
The rise or fall of a liquid in a narrow tube is due to the phenomenon known as capillary action. Capillary action occurs when the adhesive forces between the liquid molecules and the tube's surface are stronger than the cohesive forces between the liquid molecules themselves. This imbalance of forces causes the liquid to either rise or fall in the tube, depending on the specific conditions.