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

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Question: 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?

Options:

  1. Contact angle
  2. Surface angle
  3. Tension angle
  4. Cohesion angle

Correct Answer: Contact angle

Solution: 

The angle formed between the tangent to the drop surface and the solid surface is known as the contact angle, which indicates the wettability of the surface.

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

Practice Questions

Q1
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?
  1. Contact angle
  2. Surface angle
  3. Tension angle
  4. Cohesion angle

Questions & Step-by-Step Solutions

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.
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