How does the friction get affected by the nature of surface?

Explanation

### Step-by-Step Solution:

1. **Understanding Friction**: Friction is a force that opposes the relative motion between two surfaces in contact. It is essential to understand that friction is influenced by two main factors: the normal force acting between the surfaces and the nature of the surfaces themselves.

2. **Nature of Surfaces**: The "nature of the surface" refers to the roughness or smoothness of the surfaces in contact. This can be visualized as the texture of the materials involved.

3. **Surface Irregularities**: Every surface has microscopic irregularities, which are tiny bumps and grooves. When two surfaces come into contact, these irregularities interlock with each other.

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