Question Detail

PHY 101 Surface Tension Objective Question
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Question

If a liquid wets a tube, what can be said about its contact angle?
Options
A It is obtuse (greater than 90°)
B It is acute (less than 90°)
Correct Answer
C It is exactly 90°
D It is 180°
Correct Answer

Option B is the correct answer.

Detailed Explanation

Wetting occurs when adhesive forces between the liquid and the solid are strong, causing the liquid to spread. This results in a small, acute contact angle, typically less than 90°. A contact angle of 0° indicates perfect wetting.

Hint

Consider the relationship between the contact angle and the degree of wetting.

Question Info

Course: PHY 101
Topic: Surface Tension
Type: Objective
Difficulty: Not specified
Question 731 of 1250
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