Question Detail

PHY 101 Surface Tension Objective Question
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Question

The angle of contact θ for a liquid in a container is defined as the angle between which two elements?
Options
A The horizontal surface of the liquid and the tangent to the meniscus at the point of contact
B The vertical wall of the container and the tangent to the meniscus at the point of contact
Correct Answer
C The radius of the tube and the surface of the bulk liquid
D The line of cohesive force and the line of adhesive force
Correct Answer

Option B is the correct answer.

Detailed Explanation

The angle of contact is specifically measured from the vertical wall of the container, below the surface of the liquid, to the tangent line drawn to the meniscus at its point of contact with the wall.

Hint

Visualize the point where the liquid surface meets the solid wall. The angle is measured inside the liquid, between the solid surface and the liquid surface.

Question Info

Course: PHY 101
Topic: Surface Tension
Type: Objective
Difficulty: Not specified
Question 713 of 1250
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