A liquid drop is formed on a surface. The angle formed between the tangent to th

A liquid drop is formed on a surface. The angle formed between the tangent to the drop surface and the solid surface is called what?

A liquid drop is formed on a surface. The angle formed between the tangent to the drop surface and the solid surface is called what?

Step 1: Understand that a liquid drop can form on a solid surface.
Step 2: Identify the point where the liquid drop meets the solid surface.
Step 3: Imagine a line that is tangent to the surface of the liquid drop at that point.
Step 4: Now, look at the solid surface where the drop is resting.
Step 5: The angle formed between the tangent line of the drop and the solid surface is what we are interested in.
Step 6: This angle is called the contact angle.
Step 7: The contact angle helps us understand how well the liquid spreads on the surface, which is known as wettability.

Contact Angle – The angle formed between the tangent to the drop surface and the solid surface, indicating how well a liquid wets a surface.